CN108618874A - For the fixed implanting instrument of orthopedic prosthesis - Google Patents
For the fixed implanting instrument of orthopedic prosthesis Download PDFInfo
- Publication number
- CN108618874A CN108618874A CN201710174928.5A CN201710174928A CN108618874A CN 108618874 A CN108618874 A CN 108618874A CN 201710174928 A CN201710174928 A CN 201710174928A CN 108618874 A CN108618874 A CN 108618874A
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- Prior art keywords
- sleeve
- implanting instrument
- orthopedic prosthesis
- fixed
- anchors
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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
- A61F2/4609—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 acetabular cups
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/92—Impactors or extractors, e.g. for removing intramedullary devices
-
- 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
-
- 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
- A61F2002/4635—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor using minimally invasive surgery
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Surgery (AREA)
- Transplantation (AREA)
- Veterinary Medicine (AREA)
- General Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Physical Education & Sports Medicine (AREA)
- Molecular Biology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Vascular Medicine (AREA)
- Prostheses (AREA)
Abstract
The present invention provides one kind being used for the fixed implanting instrument of orthopedic prosthesis, the implanting instrument includes push rod and sleeve, the distal end of the sleeve is provided with a connection piece, one implantation material is combined with the connector, enters an orthopedic prosthesis, such fixed form in pushing the implantation material to be detached from the connector in the sleeve by the push rod, without being punched on acetabular bone, without complicated alignment function, operation is relatively easy, and operating time is also short.Particularly, the sleeve has relatively turnable first part and second part, and implantation material can be made to pass through the installation site on acetabular cup prosthesis with the angle of an arc and enter body bone tissue, implantation and curved angle has both been facilitated to be conducive to the fixation of implantation material.
Description
Technical field
The present invention relates to the field of medical instrument technology, more particularly to a kind of to be used for the fixed implanting instrument of orthopedic prosthesis.
Background technology
In artificial total hip arthroplasty, after being implanted into acetabular cup, need acetabular cup being fixed on acetabular bone to ensure hip
Mortar cup will not loosen by greater impact during exercise, especially fail to be fully grown into acetabular cup outer surface in bone
Pore structure or when too low acetabular cup outer surface friction coefficient, this demand can be particularly evident.
It is locked mostly screw at present and fixes acetabular cup on acetabular cup by way of preformed hole.To accurately complete this mistake
Journey first has on acetabular bone, gets screw hole corresponding with acetabular cup preformed hole, then utilizes tool pedicle screw, then will
Acetabular cup is fixed on acetabular bone.Particularly, before pedicle screw, doctor and its assistant need to adjust patient posture repeatedly, and
The position and direction of screw drill are substantially determined according to index wire on acetabular cup.For example, in a kind of minimally invasive surgery, by
In the limitation of small notch on skin, drill bushing and screw drill need to be passed through casing by doctor, the case where sight may be obstructed
Under, position and direction that preformed hole on acetabular cup is determined by the step on drill bushing head are attempted, and pass through screw drill end
Depth measurement label on end determines the depth of punching；After the completion of punching, after taking out screw drill and drill bushing, holding forceps need to be utilized
Clamping acetabular bone screw is put near the screw hole that need to be implanted into；Later, screw driver passes through drill bushing, is engaged and tightens screw；Finally, it takes
Go out holding forceps, screw driver and drill bushing, completes the fixed operation of acetabular cup.
But there is following defects for the above-mentioned fixed mode of acetabular cup：
The first, the process of pedicle screw is extremely complex, distribution relatively long time is needed in art, and accuracy excessively relies on master
The experience of knife doctor and its assistant.Specifically, frequent swing patient posture is needed in art to select suitable implant angle, and is implanted into
Before screw, also needs to drill on acetabular cup by screw bits and determine drilling depth, while need to also be rough by holding forceps
Ground adjusting screw position, and rotary screw could complete the implantation of screw repeatedly using screw driver.Particularly, when acetabular cup is planted
When entering position and deviation occur, determine that screw position and direction are increasingly complex, when especially implementing minimally invasive surgery, due to operator's
Visible space is small, causes the operation of pedicle screw more difficult.
The second, the implantation position of screw and direction, mainly by sight, patient posture, acetabular cup reserve pore size distribution and
The influence of carved leading line on acetabular cup causes the center location that operator can not accurately find screw to work as screw placement in turn
When the inaccuracy of position, the risk that screw loosening can be caused even to fall off influences entire surgical effect.
Invention content
The purpose of the present invention is to provide one kind being used for the fixed implanting instrument of orthopedic prosthesis, to help doctor to simplify acetabular bone
The fixed operating process of cup, saves operating time, improves the fixed strong degree of acetabular cup.
To achieve the above object and other purposes, the present invention provides one kind being used for the fixed implantation work of orthopedic prosthesis
Tool, including push rod and sleeve, the distal end of the sleeve are provided with a connection piece, and an implantation material is combined with the connector,
Enter an orthopedic prosthesis in pushing the implantation material to be detached from the connector in the sleeve by the push rod.
Further, the connector is a card slot, and the proximal end of the implantation material is completely or partially placed in the card slot
It is interior.
Further, the sleeve includes first part and the second part for being provided with the connector, and described first
Part is located at the proximal end of the second part, and the implanting instrument further includes the driving mechanism being connect with the second part,
The driving mechanism is for driving the second part to be rotated relative to the first part.
Further, the driving mechanism includes link mechanism and boosting bar, one end rotation connection of the link mechanism
The boosting bar, the other end is fixedly connected with the second part, while the link mechanism is located at the part between its both ends and turns
The dynamic connection first part；The boosting bar drives the connecting rod mechanism movement, described second of the link mechanism driving
Divide rotation.
Further, is each provided in the first part and second part of the boosting bar and the sleeve
One fulcrum, the second fulcrum and third fulcrum, the link mechanism include the connecting rod for having bending shape, one end of the connecting rod
It is rotatablely connected with first fulcrum, the other end is connect with the third fixed pivot, and the connecting rod rotates in bending part and connects
Connect second fulcrum.
Further, the distal end of the first part has to the first cambered surface away from its proximal direction protrusion, and described the
The proximal end of two parts has the second cambered surface being recessed to its distal direction, and second cambered surface is affixed with first cambered surface to be merged
It can be rotated along first cambered surface.
Further, the distal end of the first part and the proximal end of the second part are rotatablely connected.
Further, the push rod includes at least one section of stretch section that can generate flexible deformation.
Further, the stretch section is a helical structure or a hose.
Further, the sleeve includes first part and the second part for being provided with the connector, and described second
Partial proximal end is fixedly connected with the distal end of the first part.
Further, a part for the push rod is located in the second part, and another part is located at the first part
The side of the interior or described first part, the first part is formed with a step surface when being connected with the second part, described to push away
The part of bar is for being resisted against the step surface.
Further, the profile of the implantation material along its length is arc, and at least part of the card slot is along institute
The axial direction for stating sleeve is arc-shaped.
Further, sleeve, the lateral cross section shape and described sleeve pipe of the sleeve are provided on the outside of the sleeve
Inner cavity match.
Further, sleeve described in lateral direction penetrating of the card slot along the sleeve can generate flexible deformation to be formed
One elastic clamping mechanism, the elastic clamping mechanism is for being clamped the implantation material.
To sum up, one kind provided by the invention has the following advantages for the fixed implanting instrument of orthopedic prosthesis：
The implanting instrument includes push rod and sleeve, and the distal end of the sleeve is provided with connector, an implantation material and institute
Connector is stated to be combined, it is false in pushing the implantation material disengaging card slot to enter orthopaedics in the sleeve by the push rod
Body, so, when acetabular cup prosthesis is fixed, without beating screw hole on acetabular bone, without continually adjusting patient posture,
Only installation site of the implantation material on acetabular cup prosthesis need to be found accurately, by and push implantation material and acetabular cup prosthesis solid by push rod
It is fixed, and in fixation procedure, you can acetabular cup prosthesis and acetabular bone are fixed by implantation material, entire fixed operation process is simple, hand
The art time is relatively short.
Particularly, the sleeve of the implanting instrument has relatively turnable first part and second part, can be with
So that implantation material is passed through the installation site on acetabular cup prosthesis with the angle of an arc and enter body bone tissue, both facilitated implantation and
Curved angle is conducive to the fixation of implantation material.
Description of the drawings
Fig. 1 a are the stereogram of the acetabular cup of one embodiment of the invention；
Fig. 1 b are the front view of acetabular cup shown in Fig. 1 a；
Fig. 2 a are the stereogram of the implanting instrument of the embodiment of the present invention one；
Fig. 2 b are the axial sectional view of implanting instrument shown in Fig. 2 a；
Fig. 3 a are the end view drawing of the implanting instrument of the embodiment of the present invention one, and the lateral cross section of middle sleeve is circle；
Fig. 3 b are the end view drawing of the implanting instrument of the embodiment of the present invention one, and the lateral cross section of middle sleeve is ellipse；
Fig. 3 c are the end view drawing of the implanting instrument of the embodiment of the present invention one, and the lateral cross section of middle sleeve is rectangle；
Fig. 3 d are the end view drawing of the implanting instrument of the embodiment of the present invention one, and the lateral cross section of middle sleeve is crescent；
Fig. 4 a are the axial sectional view of the preferred implanting instrument of the embodiment of the present invention one；
Fig. 4 b are the stereogram of implanting instrument shown in Fig. 4 a；
Fig. 5 a are the axial sectional view of the preferred implanting instrument of the embodiment of the present invention one；
Fig. 5 b are the stereogram of implanting instrument shown in Fig. 5 a；
Fig. 6 a are the vertical view of the implanting instrument of the embodiment of the present invention two, and middle sleeve does not rotate；
Fig. 6 b are the axial sectional view of implanting instrument shown in Fig. 6 a；
Fig. 7 a are the vertical view that the sleeve of implanting instrument shown in Fig. 6 a rotates；
Fig. 7 b are the axial sectional view of implanting instrument shown in Fig. 7 a.
The reference numerals are as follows：
10- acetabular cups；11- acetabular cup prosthesis；111- slots；112- grooves；12- anchors；121- grooves；
20,30- implanting instruments；21,31- push rods；22,32- sleeves；The distal end of 22a- sleeves；22b, 32a- first part；
22c, 32b- second part；221- card slots；The inner cavities 222-；223- upper clip arms；224- lower clip arms；225- upper arm；226- underarms；
227- boss；33- link mechanisms；331- connecting rods；The first fulcrums of 311-；The second fulcrums of 321-；322- third fulcrums；312- elasticity
Section；34- boosting bars.
Specific implementation mode
It is described in further detail for the fixed implanting instrument of orthopedic prosthesis to proposed by the present invention below in conjunction with attached drawing.
It should be noted that attached drawing is all made of very simplified form and uses non-accurate ratio, only to it is convenient, lucidly assist
Illustrate the purpose of the embodiment of the present invention.
Herein, it whether explicitly points out, all numerical value are all assumed that available term " about " is modified.
Using in the context of numerical value, term " about " typically refers to those skilled in the art and will be considered to be equal to cited value
(that is, with identical function or result) and its neighbouring range.In many cases, term " about " may include by four houses
Five enter to the numerical value of nearest effective digital.Outer unless otherwise prescribed, other are to the use of term " about " (i.e. in addition to using
In context other than numerical value) it can be assumed that there is its common and habitual definition, as can be according to the context institute of this specification
Understand and be consistent with it.
As used in the specification and the appended claims, singulative "a", "an" and "the" includes
Plural reference, in addition in addition non-content explicitly points out.As used in the specification and the appended claims, term "or"
It is typically used with the meaning including "and/or", in addition in addition non-content explicitly points out.It is according to the present invention
" orthopedic prosthesis " includes but not limited to acetabular cup, further includes the artificial orthopaedics implant that other may act in organism.
Such as in specification and claims, " outside " refers to one towards acetabular fossa when acetabular cup is implanted into
Side, alternatively, " outside " refers to that the side far from anchors axis, " inside " refer to deviating from hip when acetabular cup implantation
The side of mortar nest, alternatively, " inside " refers to that " transverse direction " refers to perpendicular to quill close to the side of anchors axis
The direction of line, " side " refer to by the side of the longitudinal cross-section of sleeve axis, and " proximal end " refers to close to Medical treatment device
One end of tool operator, " distal end " refer to one end far from medical instrument operator.
First, a kind of acetabular cup 10 is present embodiments provided, it is fixed for being implanted into the acetabular fossa of human body, it realizes artificial complete
Hip replacement specifically sees Fig. 1 a and Fig. 1 b.Fig. 1 a are the stereogram of the acetabular cup 10 of one embodiment of the invention, and Fig. 1 b are
The front view of acetabular cup 10 shown in Fig. 1 a.
Specifically, the acetabular cup 10 includes an acetabular cup prosthesis 11 and multiple anchors 12, and the anchors 12 is for filling
When the implantation material of fixed acetabular cup prosthesis 11.The quantity of the anchors 12 is not limited to three in figure, as long as can guarantee fixed effect
Fruit, one or more anchors 12 all may be used.Wherein, the slot 111 of perforation is provided on the acetabular cup prosthesis 11.
The fixation principle of the acetabular cup 10 is specially：Acetabular cup prosthesis 11 is placed in acetabular fossa first (can be according to reality
The operation method of border demand and routine completes the implantation of acetabular cup prosthesis 11), later, utilize implanting instrument provided by the invention
Anchors 12 is fixed in the slot 111 of acetabular cup prosthesis 11, and in fixation procedure, by implanting instrument simultaneously by anchors 12
Extend the partial insertion body bone tissue of slot 111, to be fixedly secured acetabular cup 10 in acetabular fossa.It is apparent that institute
Anchors 12 is stated on acetabular cup prosthesis 11 after fixation, part of it is placed in slot 111 and is fixed with slot 111, another portion
Divide and stretches out slot 111 and extend to the outside of acetabular cup prosthesis 11 and be inserted into bone tissue.
In addition, when the anchors 12 is multiple, multiple anchors 12 preferably along the outside of acetabular cup prosthesis 11 not
Equidirectional extension (become apparent from and be shown in Fig. 1 a), causes head of the anchors 12 far from acetabular cup prosthesis 11 to mutually disjoint, thus with
Different directions and angle fix acetabular cup 10, and then enhance 10 fixed strong degree of acetabular cup.But multiple anchors 12 can
It is arbitrarily distributed on acetabular cup prosthesis 11, the present invention does not limit particularly, specifically, can be according to 10 actual fixation of acetabular cup
Position and direction determine the distribution of anchors 12.The head of the anchors 12 is for being inserted into body bone tissue, the anchors 12
The tail portion opposite with the head is for the joint prosthesis that reclines.
The acetabular cup 10 is in application, various sizes of anchors 12 can be chosen to consolidate according to subjects bones' situation, operator
Acetabular cup 10 is determined, to adapt to the treatment needs of different patients.In the present embodiment, the anchors 12 is preferably dimensioned to be：Length exists
Between 5.0~60.0mm, thickness is between 0.2~10.0mm, and width is between 2.0~20.0mm.Choose have it is above-mentioned these
The anchors 12 of size can substantially meet the treatment needs of different patients, and the width and thickness chosen is relatively small, because
This is not in larger bone defect at the position of former anchors 12, reduces to surgical effect in subsequent revision procedure
Harmful effect.
Further, the material of the anchors 12 can be selected from metal material, such as stainless steel, titanium alloy or cochrome, with
Ensure fixing intensity.Further, the material of the anchors 12 be selected from good biocompatibility metal material, as titanium alloy,
Medical stainless steel etc..Optionally, the anchors 12 to form included radian is prepared by modes such as mechanical processing, wire cutting or corrosion.
The implanting instrument of the present invention is further described below with reference to the drawings and specific embodiments, certainly, the present invention includes
But it is not limited in following implementations cited mode, in any configuration provided in above-described embodiment on the basis of converted
Hold, belongs to the range that the present invention is protected.
Embodiment one
Refering to Fig. 2 a and Fig. 2 b, a kind of implanting instrument 20, including push rod 21 and hollow sleeve 22 are present embodiments provided,
The distal end of the sleeve 22 is provided with card slot 221, and one end of the card slot 221 is penetrated through with the distal end 22a of sleeve 22.The card slot
221 can be the entire sleeve 22 of lateral direction penetrating, can also be the cavity wall of merely transversely 222 side of inner cavity of perforation sleeve 22, may be used also
The cavity wall of 222 both sides of inner cavity to be the sleeve 22 is not cut through by card slot 221.When the cavity wall of 222 both sides of the inner cavity is equal
When not cut through by card slot 221, the card slot 221 can be both opened in the cavity wall of 222 side of inner cavity, can also be opened in simultaneously
In the cavity wall of 222 both sides of inner cavity (i.e. width of the width of card slot 221 more than inner cavity 222).
For open operation, after completing implantation of the acetabular cup prosthesis 11 in acetabular fossa, anchors 12 is inserted into and is covered
In the card slot 221 of cylinder 22 (proximal end of anchors 12 can be completely or partially placed in card slot 221), later, anchors 12 will be carried
Sleeve 22 is inserted into operative incision and (preferably according to groove 112 on acetabular cup prosthesis 11, determines sleeve 22 relative to acetabular cup prosthesis 11
Position), and when the distal end 22a of sleeve 22 (or head of anchors 12) is in contact with the proximal end of slot 111, operator can one
The proximal end (or the handle being connected with the proximal end of sleeve 22) of holding sleeve 22 is only held, another hand push moves push rod 21 along sleeve 22
Cavity wall be moved to 221 direction of card slot and contacted with the tail portion of anchors 12, then, further push rod 21 is pushed to move forward so that anchor
Piece 12 is forced to move to the distal end directions 22a of sleeve 22 along card slot 221, until anchors 12 is pushed completely into 111 (i.e. anchors of slot
12 tail portion has disengaged from card slot 221 and enters slot 111).Obviously, during anchors 12 is pushed into slot 111, once anchors
12 head is stretched out the i.e. pluggable bone tissue of slot 111 and is fixed.If there are multiple anchors 12, can equally be operated by above-mentioned steps
It is implanted into one by one, is finally completed entire acetabular cup in the fixation in acetabular fossa.Herein, it is to be understood that so-called " open operation " is
The internal anatomy for referring to full hip-joint to be repaired is exposed outside completely, thus, operative incision is relatively large.Moreover, working as institute
It states after push rod 21 is in contact with the tail portion of anchors 12, the stroke that the push rod 21 is moved to 221 direction of card slot is at least equal to anchors
The length (length of the anchors 12 is more than the depth of slot 111) of 12 tail portions to 111 distal end of slot, to enable anchors 12 smoothly insert
Enter bone tissue.
The contour shape of the anchors 12 is usually arc, and the anchors 12 is main arc-shaped along its length, and preferably
At least part on ground, the card slot 221 is also arc-shaped along the axial direction of sleeve 22, to match same arc-shaped anchors 12, from
And anchors 12 is made more swimmingly to be moved in card slot 221.It is preferred that the bending angle of the anchors 12 along its length be more than 0 ° and
Less than or equal to 75 °, the more preferable bending angle can provide between 5~45 ° for anchors 12 and the fixation of acetabular cup 10
Better effect.
Further, the profile (i.e. lateral cross section) of the distal end 22a of the sleeve 22 can be set to round shown in Fig. 3 a, or
Crescent shown in rectangle or 3d shown in ellipse or Fig. 3 c shown in Fig. 3 b, however, the present invention includes but not limited to this
A little shapes can specifically be arranged to required shape according to actual demand.For example, the sleeve 22 of the present embodiment can be in Micro trauma
It is inserted into sleeve in operation, and is the shape to match with the inner cavity of described sleeve pipe by the profile design of the distal end 22a of sleeve 22
Shape is more convenient in plug-in-sleeve.It should be understood that the end view drawing of sleeve 22 shown in Fig. 3 a to Fig. 3 d, is by sleeve 22
The view that proximal direction orthographic projections of the distal end 22a to sleeve 22 obtains.
As a preferred embodiment, the card slot 221 of the sleeve 22 has the location structure for positioning anchors 12, with
Under will be described in the specific implementation form of the location structure, but should not be any at this in this, as limitation of the invention
Content is converted made by the basis of the configuration that invention provides, within protection scope of the present invention.
As shown in figures 4 a and 4b, the distal end 22a of the sleeve 22 is separated into the bullet that can generate flexible deformation by card slot 221
Property clamping device, at this point, 221 lateral direction penetrating sleeve 22 of the card slot, and the elastic clamping mechanism is for being clamped anchors 12.Tool
Body, the elastic clamping mechanism include opposite and preferably symmetrically arranged upper clip arm 223 and lower clip arm 224, two clamp arm it
Between be hollow out card slot 221.In turn, when the anchors 12 is inserted into card slot 221, the upper clip arm 223 and lower clip arm 224 by
Urgent flexible deformation is opened outward, thus by 12 firm clamping of anchors.Preferably, the elastic clamping mechanism can generate 0.01~
The flexible deformation of 5.0mm.
In a further preferred embodiment, as shown in figure 5 a and 5b, the distal end 22a of the sleeve 22 is separated by card slot 221
At another elastic clamping mechanism for generating flexible deformation, similarly, 221 lateral direction penetrating sleeve 22 of card slot at this time.It is described another
One elastic clamping mechanism includes opposite and preferred symmetrically arranged upper arm 225 and underarm 226, is the card of hollow out between the two-arm
Slot 221.At least one holding section is provided in order to which anchors 12 is preferably clamped, on another elastic clamping mechanism (to be equivalent to
It is provided with holding section on the cell wall of card slot 221), at the same time, it is provided at least one snap fit portion in the anchors 12, leads to
The cooperation at least one holding section and at least one snap fit portion is crossed further to limit anchors 12.
In the present embodiment, the holding section is a boss 227, and the snap fit portion is a groove 121.When the anchor
When piece 12 is inserted into card slot 221, the upper arm 225 is forced to flexible deformation with underarm 226 and opens clamping anchors 12 outward, same with this
Shi Suoshu boss 227 is inserted into the groove 121 of anchors 12 and is limited.Certainly, the holding section can also be a groove, and institute
It is a boss to state snap fit portion.Optionally, the holding section can be both arranged in upper arm 225, can also be arranged in underarm
226, it can also be arranged simultaneously in upper arm 225 and underarm 226.
In other embodiments, also anchors 12 can be clamped on card slot only by the cooperation of holding section and snap fit portion
In 221, that is, sleeve 22 is not configured with elastic clamping mechanism at this time.
With continued reference to Fig. 2 b, the sleeve 22 includes first part 22b and second part 22c, and the setting of the card slot 221 exists
Second part 22c, and the proximal end of the second part 22c is fixedly connected with the distal end of first part 22b, while at least described
Two part 22c have axially through the inner cavity 222.The structure of the inner cavity 222 can accommodate push rod 21 and move freely.
In one embodiment, the first part 22b is solid construction, in use, a part for the push rod 21 is located at the
In two part 22c, another part is located at the side of first part 22b.In another embodiment (not shown), the first part
22b accordingly have axially through the inner cavity 222, in use, a part for the push rod 21 is located in second part 22c,
Another part is located in first part 22b.
Preferably, a step surface, and the push rod 21 are formed with when the first part 22b is connected with second part 22c
L-shaped in an axial direction, when push rod 21 is inserted into second part 22c, the part of the push rod 21 can be resisted against described
On terrace, to limit the stroke that push rod 21 is moved to the proximal direction of sleeve 22, fixed operation of being more convenient for.The first part
22b and second part 22c can be seperated molding, can also be to be integrally formed.When the sleeve 22 is an integral structure, institute
State sleeve 22 have axially through inner cavity 222, at this point, the push rod 21 can work in whole insertion sleeve 22, and described push away
The length of bar 21 is more than the length of sleeve 22, in order to which operator holds the proximal end movement of push rod 21.
Embodiment two
Acetabular cup provided in this embodiment and embodiment one are essentially identical, are carried out below only for the difference of implanting instrument
Description.Wherein, anchors 12 only can be implanted into scheduled slot 111 by the implanting instrument 20 that embodiment one provides along fixed-direction, so
And implanting instrument 30 provided in this embodiment can adjust the implantation direction of anchors 12, to be inserted into scheduled slot 111.
Refering to Fig. 6 a, 6b, 7a and 7b, a kind of implanting instrument 30, including push rod 31, sleeve 32 and drive are present embodiments provided
Motivation structure, and the sleeve 32 includes the first part 32a and second part 32b with card slot 221, the first part
32a is arranged in the proximal end of second part 32b, and the driving mechanism connects second part 32b and for driving second part 32b phases
First part 32a is rotated.In another embodiment, the card slot 221 can be arranged in anchors 12, correspondingly institute
State the protrusion for being provided with and being placed in the card slot 221 on the second part 32b of sleeve 32.It is apparent that no matter sleeve 32
Distal end be provided with card slot or protrusion, as long as being provided with the connector being combined with anchors in the distal end of sleeve.
For minimally invasive surgery, after completing implantation of the acetabular cup prosthesis 11 in acetabular fossa, anchors 12 is inserted into
In the card slot 221 of sleeve 32, later, the sleeve 32 for carrying anchors 12 is preferably inserted into sleeve, and (casing has been inserted into operation and has cut
Mouthful and its distal end contacted acetabular cup prosthesis 11), preferably according to groove 112 on acetabular cup prosthesis 11 come determine sleeve 32 relative to
The position of acetabular cup prosthesis 11, then, by the second part 32b of the driving mechanism drive sleeve 32 relative to first part
32a rotates, until the distal end 22a of sleeve 32 is rotated to scheduled slot 111 and be directed at, and works as distal end 22a (or the anchors of sleeve 32
The head of piece 12) when being in contact with the proximal end of corresponding slot 111, the push rod 31 in sleeve 32 is enabled to be moved to 221 direction of card slot
To contact anchors 12, anchors 12 is further pushed to be moved along card slot 221 until anchors 12 is completely into corresponding slot 111
It is interior, implantation of the anchors 12 in different location can be completed in this way, while the fixation of acetabular cup and acetabular bone can be completed.Same road
Reason can be operated each anchors 12 of implantation one by one by above-mentioned steps, be finally completed consolidating for entire acetabular cup when anchors 12 is multiple
It is fixed.It should be understood that " minimally invasive surgery " herein refers to, before operation, one can be held by corresponding position with patient first
A small-sized operative incision, operator implements total hip replacement by the operative incision, compared to open operation, Micro trauma
The operative incision of operation is small, so injury is small caused by patient, is conducive to the physical recovery of patient.
In a preferred embodiment of the invention, the driving mechanism includes link mechanism 33 and boosting bar 34, described
Boosting bar 34 is hollow structure, and the push rod 31 is slidably disposed in boosting bar 34.Specifically, the company
One end of linkage 33 is rotatablely connected boosting bar 34, and the other end is fixedly connected with the second part 32b of sleeve 32, while the connecting rod
The first part 32a of partial turn branch sleeve 32 of the mechanism 33 between its both ends.When the sleeve 32 is inserted into the set
Guan Hou, operator can hand hold the proximal end (or the handle being connected with the proximal end of first part 32a) of first part 32a, separately
One hand push moves axial movement of the boosting bar 34 along sleeve 32, drives link mechanism 33 to move in pushing course, while the company
Second part 32b of the linkage 33 with moving sleeve 32 is rotated relative to first part 32a, and when the second part of the sleeve 32
32b is rotated to after being aligned with scheduled slot 111, stops pushing boosting bar 34.And then further push pushing away in sleeve 32
Bar 31 is moved to close to the direction of anchors 12, and when the distal end of push rod 31 and the tail portion of anchors 12 contact, the anchors 12 exists
It is moved to along card slot 221 under the further promotion of push rod 31 and completely disengages card slot 221 and fixed with slot 111.Herein, should know
Dawn rotates by the rotation of 34 drive sleeve 32 of boosting bar compared to 31 drive sleeve 32 of push rod is directly passed through, it is ensured that
Rotation angle will not be influenced by push rod 31, to which anchors 12 is effectively pushed into slot 111.
Further, the link mechanism 33 includes the connecting rod 331 for having bending shape, and one end is rotated with boosting bar 34
Connection, the other end are fixedly connected with the second part 32b of sleeve 32, and the connecting rod 331 is rotatablely connected sleeve 32 in bending part
First part 32a.It specially is provided with a rotating fulcrum between the opposite end of the connecting rod 331, passes through the rotating fulcrum
It is rotatablely connected with the first part 32a of sleeve 32.More specifically, the first fulcrum 311 is provided in the boosting bar 34, it is described
One end of connecting rod 33 is rotatablely connected with the first fulcrum 311, and the second fulcrum 321, the connecting rod are provided on the first part 32a
331 rotating fulcrum and the second fulcrum 321 are rotatablely connected, and are provided with third fulcrum 322 on the second part 32b, described
The other end of connecting rod 331 is fixedly connected with third fulcrum 322, can make connecting rod 331 during boosting bar 34 moves in this way
The fulcrum that rotates rotates, and then the second part 32b rotations with moving sleeve 32.
Optionally, a part for the connecting rod 331 is located in second part 32b, and another portion can both be located at first part
In 32a, the side of first part 32a can also be located at.Such as when first part 32a is solid bar member, the connecting rod 331
Another part is located at the side of first part 32a；When first part 32a is hollow pipe, another portion of the connecting rod 331
Divide to be located in first part 32a and (is shown in Fig. 6 b and 7b).
Optionally, the distal end of the first part 32a can with the proximal end of second part 32b there are certain gap, so as to
It is rotated around the second fulcrum 321 relative to first part 32a in second part 32b.Preferably, the distal end of the first part 32a
For to the first cambered surface away from its proximal direction protrusion, and the proximal end of the second part 32b is to be recessed to its distal direction
Second cambered surface, second cambered surface is affixed with first cambered surface to be merged and can be rotated along first cambered surface.
In some embodiments, the distal end of the first part 32a and the proximal end of second part 32b are rotatablely connected, such as logical
Rotation connection is realized in the cooperation for crossing pin and axis, it is of course also possible to which for other rotation connection modes, the present invention is specifically unlimited.
Then, as shown in figs. 7 a and 7b, when the boosting bar 34 is moved by axial force to the distal direction of sleeve 32,
(compared to the rotation of the proximal direction of sleeve 32 relative to first part 32a by second part 32b of the connecting rod 331 with moving sleeve 32
As shown in Figure 7b is clockwise), and stop operating when sleeve 32 is rotated to certain angle, later, push rod 31 is pushed to make anchors
12 move along card slot to the distal direction of sleeve 32, until anchors 12 is completely into slot 111.Conversely, working as the boosting bar 34
When being moved to the proximal direction of sleeve 32 by axial force, by second part 32b of the connecting rod 331 with moving sleeve 32 relative to first
Part 32a rotates (such as counterclockwise shown in Fig. 7 b) to the distal end directions 22a of sleeve 32.
Further, in order to adapt to angles of the second part 32b of sleeve 32 relative to first part 32a, the push rod 31
At least part flexible deformation can occur, to more swimmingly being moved in sleeve 32, i.e., the described push rod 31 includes at least one
Section can generate the stretch section 312 of flexible deformation.The stretch section 312 may be provided at sleeve 32 first part 32a and second
Divide the places connected 32b.
In one embodiment, the stretch section 312 is a helical structure, which can be that push rod 31 is straight
Wiring is cut, and can be the component being additionally arranged, such as screw type spring, can also be that itself can generate larger bullet
Property deformation push rod.
Finally, present pre-ferred embodiments as described above, but and be limited to the range disclosed in above-described embodiment, such as
The driving mechanism of drive sleeve rotation is not limited to link mechanism, can also be flexible drive mechanism, for example pass through silk, rope or belt etc.
Flexible structure branch sleeve is rotated with drive sleeve.In addition, for fixing the implantation material of acetabular cup generally preferably similar to anchors
Structure, to be omitted in the step of being punched on acetabular bone.In addition, the groove is arranged on acetabular cup prosthesis, it is usually located at acetabular cup
The edge of prosthese is used to indicate the installation site of anchors, and can determine whether anchors reaches scheduled peace according to the groove
Holding position.
Then, compared with prior art, implanting instrument of the invention include at least push rod and sleeve, the sleeve it is remote
End is provided with connector, when an implantation material is when the connector is combined, by the push rod in pushing institute in the sleeve
It states the implantation material disengaging connector and enters acetabular cup prosthesis, so, when acetabular cup prosthesis is fixed, without on acetabular bone
Screw hole is beaten, without patient posture is continually adjusted, only need to find installation site of the implantation material on acetabular cup prosthesis accurately, and lead to
Cross push rod push implantation material and fixed with acetabular cup prosthesis, in fixation procedure, you can by implantation material by acetabular cup prosthesis with
Acetabular bone is fixed, and whole operation process is relatively easy, and operating time is also short.
Wherein, the sleeve of the implanting instrument can relatively rotate under the driving of a driving mechanism, be more convenient for implantation material with
Installation site on the angle acetabular cup prosthesis of one arc enters body bone tissue, has both facilitated implantation and curved angle is conducive to
The fixation of implantation material.
Foregoing description is only the description to present pre-ferred embodiments, not to any restriction of the scope of the invention, this hair
Any change, the modification that the those of ordinary skill in bright field does according to the disclosure above content, belong to the protection of claims
Range.
Claims (14)
1. one kind be used for the fixed implanting instrument of orthopedic prosthesis, which is characterized in that including push rod and sleeve, the sleeve it is remote
End is provided with a connection piece, and an implantation material is combined with the connector, by the push rod described in being pushed in the sleeve
Implantation material is detached from the connector and enters an orthopedic prosthesis.
2. according to claim 1 be used for the fixed implanting instrument of orthopedic prosthesis, which is characterized in that the connector is one
The proximal end of card slot, the implantation material is completely or partially placed in the card slot.
3. according to claim 1 be used for the fixed implanting instrument of orthopedic prosthesis, which is characterized in that the sleeve includes the
A part and the second part for being provided with the connector, the first part are located at the proximal end of the second part, and institute
It further includes the driving mechanism being connect with the second part to state implanting instrument, and the driving mechanism is for driving the second part
It is rotated relative to the first part.
4. according to claim 3 be used for the fixed implanting instrument of orthopedic prosthesis, which is characterized in that the driving mechanism packet
Include link mechanism and boosting bar, one end of the link mechanism is rotatablely connected the boosting bar, and the other end is fixedly connected with described the
Two parts, while the link mechanism is located at the partial turn between its both ends and connects the first part；The boosting bar is driven
The connecting rod mechanism movement is moved, the link mechanism drives the second part rotation.
5. it is according to claim 4 be used for the fixed implanting instrument of orthopedic prosthesis, which is characterized in that the boosting bar and
The first fulcrum, the second fulcrum and third fulcrum, institute are each provided in the first part of the sleeve and second part
It includes the connecting rod for having bending shape to state link mechanism, and one end of the connecting rod is rotatablely connected with first fulcrum, the other end
It is connect with the third fixed pivot, and the connecting rod is rotatablely connected second fulcrum in bending part.
6. according to claim 3 be used for the fixed implanting instrument of orthopedic prosthesis, which is characterized in that the first part
Distal end has to the first cambered surface away from its proximal direction protrusion, and the proximal end of the second part, which has to its distal direction, to be recessed
The second cambered surface, second cambered surface is affixed with first cambered surface to be merged and can be rotated along first cambered surface.
7. according to claim 3 be used for the fixed implanting instrument of orthopedic prosthesis, which is characterized in that the first part
Distal end and the proximal end of the second part are rotatablely connected.
8. being used for the fixed implanting instrument of orthopedic prosthesis according to any one of claim 3 to 7, which is characterized in that
The push rod includes at least one section of stretch section that can generate flexible deformation.
9. according to claim 8 be used for the fixed implanting instrument of orthopedic prosthesis, which is characterized in that the stretch section is one
Helical structure or a hose.
10. according to claim 1 be used for the fixed implanting instrument of orthopedic prosthesis, which is characterized in that the sleeve includes
First part and the second part for being provided with the connector, the distal end of the proximal end and the first part of the second part
It is fixedly connected.
11. according to claim 10 be used for the fixed implanting instrument of orthopedic prosthesis, which is characterized in that the one of the push rod
Part is located in the second part, and another part is located in the first part or the side of the first part, and described the
A part of and described second part connecting place is formed with a step surface, and the part of the push rod is for being resisted against described
On terrace.
12. according to claim 2 be used for the fixed implanting instrument of orthopedic prosthesis, which is characterized in that the implantation material edge
The profile of length direction is arc, and at least part of the card slot is arc-shaped along the axial direction of the sleeve.
13. according to claim 1 be used for the fixed implanting instrument of orthopedic prosthesis, which is characterized in that outside the sleeve
Side is provided with sleeve, and the lateral cross section shape of the sleeve and the cavity shape of described sleeve pipe match.
14. according to claim 2 be used for the fixed implanting instrument of orthopedic prosthesis, which is characterized in that the card slot is along institute
Sleeve described in the lateral direction penetrating of sleeve is stated, to form the elastic clamping mechanism that can generate flexible deformation, the resilient clamp machine
Structure is for being clamped the implantation material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710174928.5A CN108618874B (en) | 2017-03-22 | 2017-03-22 | Implant tool for orthopaedic prosthesis fixation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710174928.5A CN108618874B (en) | 2017-03-22 | 2017-03-22 | Implant tool for orthopaedic prosthesis fixation |
Publications (2)
| Publication Number | Publication Date |
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| CN108618874A true CN108618874A (en) | 2018-10-09 |
| CN108618874B CN108618874B (en) | 2021-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710174928.5A Active CN108618874B (en) | 2017-03-22 | 2017-03-22 | Implant tool for orthopaedic prosthesis fixation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111603268A (en) * | 2020-06-16 | 2020-09-01 | 王文生 | Device for pushing breast prosthesis |
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| US20060253189A1 (en) * | 2002-04-03 | 2006-11-09 | Boston Scientific Corporation | Artificial valve |
| CN101878007A (en) * | 2007-06-08 | 2010-11-03 | Ldr医疗公司 | Intersomatic cage, intervertebral prosthesis, anchoring device and implantation instruments |
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| Publication number | Publication date |
|---|---|
| CN108618874B (en) | 2021-01-01 |
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