CN208851721U - A kind of implanting instrument - Google Patents
A kind of implanting instrument Download PDFInfo
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- CN208851721U CN208851721U CN201820752362.XU CN201820752362U CN208851721U CN 208851721 U CN208851721 U CN 208851721U CN 201820752362 U CN201820752362 U CN 201820752362U CN 208851721 U CN208851721 U CN 208851721U
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- handle body
- negative pressure
- attacking head
- implanting instrument
- contact surface
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Abstract
The utility model relates to orthopaedic technique fields, disclose a kind of implanting instrument.The implanting instrument is implanted into applied to joint prosthesis, implanting instrument includes: strike end cap, handle body and attacking head, handle body both ends are respectively fitted with strike end cap and attacking head, end of the attacking head far from handle body is for assembling joint implant and being bonded joint implant surface, end face of the strike end cap far from handle body is transferred to the joint implant being assemblied on attacking head by handle body and attacking head for receiving mechanical force；Handle is provided with negative pressure regulating piston in handle body, negative pressure regulating piston can be moved axially along handle body, to cooperatively form negative pressure space with handle body and attacking head, so that attacking head be made to hold on the joint implant for being bonded assembly with it as hollow structure.By the above-mentioned means, the utility model can be improved the convenience of implanting instrument structural reliability and articular prosthesis (implantation material) implantation.
Description
Technical field
The utility model relates to orthopaedic technique fields, more particularly to a kind of implanting instrument.
Background technique
Artificial hip joint replacing is the most successfully one of operation in surgery developing history, but clinical studies show abrasion is
Between the big problem of urgently to be resolved one, either acetabular cup and acetabular bone liner or between acetabular bone liner and femur bulb, or
Between femur bulb and femoral stem, the abrasive dust particle of generation, less serious case causes bone to dissolve, prosthese aseptic loosening and infection, it is heavy then
Prosthese is caused to fail, it is necessary to be injured bigger and costly, and the also more limited revision procedure of clinical effectiveness.
Another problem of Replacement of Hip Joint is postoperative dislocation, and researches show that this problem can be by using big
The artificial thigh bone of diameter and acetabular bone liner with flash prevent, but since the size of acetabular fossa is relative constant, i.e. acetabular cup
Size cannot unlimitedly amplify, and the presence of acetabular bone liner, one side acetabular bone liner is thick as far as possible, thus more resistance to
Mill extends prosthese service life, and on the other hand, artificial thigh bone wants small many compared to primary femoral head, thus the work of hip joint
Dynamic degree is restricted, and is more easier to dislocate, so more wear-resisting will use in thick acetabular bone after acetabular cup size determines
Lining, but artificial thigh bone can only just select it is small, thus cause postoperative limited range of motion and increase postoperative dislocation risk；If it is
It prevents from dislocating, using the artificial thigh bone of major diameter, the thickness of acetabular bone liner must substantially reduce, the wear-resisting longevity of acetabular bone liner
Life will be limited, this urgently alleviates implacable contradiction by the improvement of material property at present, thus crack this by
Carry out problem for a long time.
Does is another clinical problem how to form effective biological fixation for traditional metal implant? existing solution
Certainly scheme is broadly divided into two classes, and one kind increases the roughness of implant surface, starches and sprays such as plasma titanium, helps osteoblast
As soon as possible in bone length, reliable biological fixation is formed, another kind of is to simulate the primary trabecular bone structure of human body, in implant surface
Similar porous structure is constructed, such as tantalum metal bone trabecula, and be aided with hydroxyapatite coating layer etc., to lure that osteoblast bone is long into
Enter, to form good biological fixation.But the combination reliability between both metals of coating and implantation material itself is then another
One problem.
Existing metal acetabulum cup is separated with ceramics or plastics acetabular bone liner, therefore in the implantation and acetabular bone of acetabular cup
The implantation of lining is the operating procedure of two separation.
Specially design has threaded through-hole at the dome of existing metal acetabulum cup, needs using with corresponding pairing spiral shell
The specific customization implanting instrument of line, could complete with metal acetabulum cup being fixedly connected and by strike be implanted in acetabular fossa.
The then installation of existing ceramics or plastics acetabular bone liner, very troublesome, general doctor is manually to install, and is put into
In metal acetabulum cup, the spherical beating device for then reusing specific customization is completed strike and is implanted in metal acetabulum cup.
Utility model content
In view of this, the utility model mainly solving the technical problems that provide a kind of implanting instrument, can be improved implantation
Tool construction reliability and the convenience of articular prosthesis (implantation material) implantation.
In order to solve the above technical problems, the technical solution that the utility model uses is: a kind of implanting instrument is provided, it should
Implanting instrument is implanted into applied to joint prosthesis, and implanting instrument includes that strike end cap, handle body and attacking head, handle body both ends fill respectively
Equipped with strike end cap and attacking head, end of the attacking head far from handle body is for assembling joint implant and being bonded joint implant
Surface, end face of the strike end cap far from handle body are transferred to assembly by handle body and attacking head for receiving mechanical force
In the joint implant on attacking head；Handle is provided with negative pressure regulating piston in handle body, negative pressure regulating piston can as hollow structure
It moves axially along handle body, to cooperatively form negative pressure space with handle body and attacking head, is bonded so that attacking head be made to hold on it
The joint implant of assembly.
In an embodiment of the utility model, attacking head, which is used to assemble, is formed with the on the end surface of joint implant
One accommodation groove, the first accommodation groove is along attacking head end surface circumferentially around setting, and the first accommodation groove is for accommodating sealing ring simultaneously
The end surface that attacking head is used to assemble joint implant is divided into the first contact surface and the second contact surface；First contact surface
It can be bonded the surface of joint implant, so that sealing ring contacts joint implant surface and forms sealing, so that joint implant,
Attacking head, handle body and negative pressure regulating piston cooperatively form negative pressure space, so that attacking head holds on joint implant；The
Two contact surfaces are used to cooperate guidance attacking head to be directed at the implantation of insertion joint with guidance contact surface corresponding on joint implant surface
Object.
In an embodiment of the utility model, the first contact surface is a spherical surface, and the corresponding subtended angle of the first contact surface is
100 °~160 °, and the spherical radius of the first contact surface is 10mm~40mm.
In an embodiment of the utility model, the second contact surface is a conical surface, the second contact surface and the first contact surface
Central axis is in a default angle, and the central axis of the extended surface of the second contact surface and the first contact surface intersects at the first contact surface
Side far from handle body.
In an embodiment of the utility model, default angle is 10 °~40 °.
In an embodiment of the utility model, negative pressure hole is provided on the first contact surface, negative pressure hole and negative pressure space connect
It is logical.
In an embodiment of the utility model, negative pressure hole include the first negative pressure hole and multiple second negative pressure holes, first
Negative pressure hole is set to the center of the first contact surface, and multiple second negative pressure holes are uniformly distributed along the circumferential direction of the first contact surface.
In an embodiment of the utility model, the diameter of the first negative pressure hole is greater than the second negative pressure hole.
In an embodiment of the utility model, attacking head is elastic material, plays buffering with the transmitting to mechanical force and makees
With.
In an embodiment of the utility model, the end insertion handle body setting that attacking head is connect with handle body, and attacking head
It contacts and is formed at least one second accommodation groove on the end surface of handle body, the second accommodation groove is along the end of attacking head insertion handle body
Circumferentially around setting, for accommodating sealing ring, sealing ring and handle body inner wall cooperatively form sealing.
In an embodiment of the utility model, negative pressure regulating piston is embedded in handle body, and negative pressure regulating piston contacts
It is formed at least one third accommodation groove on the surface of handle body inner wall, third accommodation groove is along negative pressure regulating piston circumferentially around setting
It sets, for accommodating sealing ring, sealing ring and handle body inner wall cooperatively form sealing.
In an embodiment of the utility model, implanting instrument further comprises that negative pressure adjusts handle of gear, and negative pressure adjusts handle of gear
It is set on the outside of handle body and corresponding negative pressure regulating piston is arranged far from the end of attacking head, negative pressure adjusts handle of gear and passes through a connecting pin
Nail connect with negative pressure regulating piston, negative pressure adjust handle of gear can handle body lateral surface along handle body axial movement, and then drive bear
Press regulating piston in handle body along the axial movement of handle body.
In an embodiment of the utility model, handle body hollow out is provided with the first guiding groove, and negative pressure adjusts handle of gear and can drive
Connecting pin is moved along the first guiding groove；First guiding groove includes that interconnected first axis guiding groove and the first circumferential direction draw
Guide groove, first axis guiding groove is axially arranged along handle body, for guiding connecting pin to move axially along handle body, to form negative pressure sky
Between；First circumferential guiding groove is circumferentially arranged along handle body, for guiding connecting pin circumferentially to move along handle body, and it is sliding in connecting pin
When entering the first circumferential guiding groove, position of the negative pressure regulating piston inside handle body in handle body axial direction is limited, and then realize to negative
Press the pressure maintaining in space.
In an embodiment of the utility model, the first guiding groove includes the multiple first circumferential guiding grooves, and multiple first weeks
It is arranged to guiding groove along handle body axially spaced-apart, negative pressure, which adjusts handle of gear, can drive connecting pin to slide into the circumferential guidance of different first
Slot, so that negative pressure space has different negative pressure values.
In an embodiment of the utility model, strike end cap includes load portion and interconnecting piece, and interconnecting piece is embedded in handle body
Setting, load portion are set to end of the interconnecting piece far from attacking head, and interconnecting piece is structure as a whole with load portion, and load portion is far from even
The end face diameter of socket part is greater than handle body outer diameter and it is used to receive mechanical force.
In an embodiment of the utility model, it is provided with guide pin on the side that interconnecting piece is contacted with handle body inner wall,
Handle body corresponds to guide pin hollow out close to the end of strike end cap and is provided with the second guiding groove, and the second guiding groove is for guiding guidance
Pin is slided along the second guiding groove, so that strike end caps are in handle body end.
In an embodiment of the utility model, handle body outer surface is provided with anti-skid structure.
The beneficial effects of the utility model are: being different from the prior art, implanting instrument application provided by the utility model
It is implanted into joint prosthesis.The implanting instrument includes strike end cap, handle body and attacking head, and handle body both ends are respectively fitted with strike end
Lid and attacking head.Strike end cap is used to receive mechanical force far from the end face of handle body, and will by handle body and attacking head
The mechanical force is transferred to the joint implant being assemblied on attacking head, to carry out the implantation work of the joint implant.Its
In, end of the attacking head far from handle body is for assembling joint implant and being bonded joint implant surface, so that attacking head and pass
The contact surface area for saving implantation material maximizes, and guarantees to alleviate attacking head and joint implant while mechanical force reliable delivery
Stress on contact surface is concentrated, to improve the structural reliability of attacking head and joint implant.Implanting instrument handle is as hollow
Structure is provided with negative pressure regulating piston in handle body, and negative pressure regulating piston can be moved axially along handle body, with handle body and attacking head
Negative pressure space is cooperatively formed, so that attacking head be enable reliably to hold on the joint implant for being bonded assembly with it.Implanting instrument
Joint implant can be steadily held on by negative pressure, the plant of joint implant is accurately controlled and adjusted convenient for user
Enter position and angle, while the holding assembling for only needing an implanting instrument that joint implant can be completed is implanted into strike, it is convenient
The implantation process of joint implant reduces the operating time, to improve the convenience of articular prosthesis (implantation material) implantation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one embodiment of the utility model implanting instrument；
Fig. 2 is the diagrammatic cross-section of implanting instrument shown in Fig. 1；
Fig. 3 is the structural schematic diagram of one embodiment of assembly method of the utility model attacking head and joint implant；
Fig. 4 is the structural schematic diagram of one embodiment of the utility model attacking head；
Fig. 5 is the structural schematic diagram of the assembly sealing ring of attacking head shown in Fig. 4；
Fig. 6 is the structural schematic diagram of the view of attacking head other direction shown in Fig. 4；
Fig. 7 is the diagrammatic cross-section of attacking head shown in Fig. 4；
Fig. 8 is the structural schematic diagram of one embodiment of the utility model negative pressure regulating piston；
Fig. 9 is the structural schematic diagram of one embodiment of the first guiding groove of the utility model；
Figure 10 is the structural schematic diagram of another embodiment of the utility model implanting instrument；
Figure 11 is that the negative pressure of implanting instrument shown in Figure 10 adjusts the structural schematic diagram that handle of gear is in different stalls；
Figure 12 is the structural schematic diagram of one embodiment of assembly method of the utility model strike end cap and handle body.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe.
The poor technology of convenience is implanted into solve implanting instrument structural reliability in the prior art and joint implant
Problem.The utility model provides a kind of implanting instrument, which is implanted into applied to joint prosthesis, and implanting instrument includes strike
End cap, handle body and attacking head, handle body both ends are respectively fitted with strike end cap and attacking head, end of the attacking head far from handle body
For assembling joint implant and being bonded joint implant surface, end face of the strike end cap far from handle body is for receiving mechanical masterpiece
With, and the joint implant being assemblied on attacking head is transferred to by handle body and attacking head；Handle is as hollow structure, in handle body
It is provided with negative pressure regulating piston, negative pressure regulating piston can be moved axially along handle body, negative to cooperatively form with handle body and attacking head
Space is pressed, so that attacking head be made to hold on the joint implant for being bonded assembly with it.It is described in detail below.
Fig. 1 is the structural schematic diagram of one embodiment of the utility model implanting instrument referring to FIG. 1-2, and Fig. 2 is shown in Fig. 1
The diagrammatic cross-section of implanting instrument.
Hip joint (hip joint) is one of biggish joint of human body.By the femoral head/neck and bone of femur (thigh) proximal end
Acetabular bone (hip mortar) composition on basin, outside is covered with muscle and soft tissue.From structure, hip joint is a kind of typical head mortar
(ball-and-socket) joint.Femoral head moving in rotation in acetabular bone under the drawing control of muscle, to form the activity of hip joint.Hip closes
Section is the important weight-bearing joints of human body, while being also the maximum joint of scope of activities in weight-bearing joints.It (can not only be sat down with stretching and beading
With stand), interior receipts outreach (thigh close to and far from midline of body) can (knee joint be inwardly and to outward turning with inside and outside rotation
Turn).In people's daily life, hip joint plays important role, either walking standing or sitting and lying, when
Moment carves the participation for all be unableing to do without hip joint.
Hip joint disease damage refers to causes the structure of hip joint, cartilage to be abnormal due to various reasons, hip joint occur into
The pain and function limitation that row aggravates, thus the case where influencing joint normal use.Due to cartilage shortage self-regeneration and again
Raw ability, existing medical technique level can not also accomplish to bear a heavy burden the cartilage transplantation at position, thus cartilage once occur lesion or
Damage will be irreversible.Conventional the methods of drug therapy can only play the role of Saving cortilage cartilage, can not repair by
Position is damaged, therefore operative treatment is to solve the effective treatment method of terminal phase arthritis disease, is set by artificial hip joint
Hand-off art, the implantation of realization acetabular cup and acetabular bone liner is to replace disease damage joint structure.It should be noted that the present embodiment institute
Illustrate that implanting instrument can be adapted for the implantation of acetabular cup and acetabular bone liner.
In the present embodiment, implanting instrument 1 includes strike end cap 11, handle body 12 and attacking head 13, and handle body 12 is strip
Shape column structure, both ends are respectively fitted with strike end cap 11 and attacking head 13.Attacking head 13 is used far from the end of handle body 12
In assembly joint implant and it is bonded joint implant surface, end face of the strike end cap 11 far from handle body 12 is for receiving mechanical force
Effect, and the joint implant being assemblied on attacking head 13 is transferred to by handle body 12 and attacking head 13.For example, work as plant
When entering implant surgery of the tool 1 applied to acetabular cup 2, due to 2 near hemispherical of acetabular cup, inner hollow, therefore implanting instrument 1
Attacking head 13 from acetabular cup 2 opening insertion acetabular cup 2 in and attacking head 13 be bonded acetabular cup 2 inner surface 21, complete
The assembly work of attacking head 13 and acetabular cup 2, as shown in Figure 3.Since attacking head 13 is bonded joint implant surface, so that strike
First 13 maximize with the contact surface area of joint implant, can guarantee to alleviate attacking head while mechanical force reliable delivery
13 concentrate with the stress on joint implant contact surface, to improve the structural reliability of attacking head 13 Yu joint implant.
12 inner hollow of handle body, is internally provided with negative pressure regulating piston 14.Negative pressure regulating piston 14 can be along 12 axis of handle body
Negative pressure space is formed inside implanting instrument 1 to movement so that negative pressure regulating piston 14, handle body 12 and attacking head 13 cooperate
15.Due to being in negative pressure state inside implanting instrument 1, under the effect of 1 external pressure of implanting instrument, attacking head 13 can be stablized
The joint implant for being bonded assembly with it is held on, the implantation position of joint implant is accurately controlled and adjusted convenient for user
It sets and angle, while the holding assembling for only needing an implanting instrument 1 that joint implant can be completed is implanted into strike, facilitates joint
Implantation material implantation process reduces the operating time, to improve the convenience of joint implant implantation.
In the other embodiments of the utility model, the suitable environment of implanting instrument 1 include but is not limited to acetabular cup and
The implantation of acetabular bone liner.The joint structure similar with acetabular cup or acetabular bone liner is even different from acetabular cup or acetabular bone liner
Joint structure, by choose adaptation attacking head 13, enable attacking head 13 by negative pressure grip tightly joint implantation
Object, and realize that the implantation work of the joint implant of implantation can be illustrated implantation work by the present embodiment under mechanical power drive
The suitable environment of tool 1, it is not limited here.
Please refer to Fig. 4-7.Further, attacking head 13 is used to assemble on the end surface of joint implant and is formed with first
Accommodation groove 131, the first accommodation groove 131 is along 13 end surface of attacking head circumferentially around setting.First accommodation groove 131 is for accommodating
Sealing ring 133 simultaneously marks off the first contact surface 132 in the end surface that attacking head 13 is used to assemble joint implant.First accommodating
Slot 131 is preferably using the center of the first contact surface 132 as the circular ring structure in the center of circle.The surface shape of first contact surface 132 and pass
Section implantation material correspond to surface and is mutually matched that (such as the surface shape of the first contact surface 132 matches the interior of acetabular cup or acetabular bone liner
Surface) so that the first contact surface 132 can be bonded the surface of joint implant, so that the sealing ring 133 in the first accommodation groove 131
Contact joint implant surface.Sealing ring 133 at least partly protrudes from the first accommodation groove before it contacts joint implant
Except 131, and sealing ring 133 is elastic material, after attacking head 13 is bonded joint implant surface, 133 institute of sealing ring
It contacts joint implant surface and squeezes sealing ring 133 and form sealing, so that joint implant, attacking head 13, handle body 12 and negative
Pressure regulating piston 14 cooperatively forms negative pressure space 15, so that attacking head 13 holds on joint implant.
Optionally, the first contact surface 132 is a spherical surface, and the corresponding subtended angle θ of the first contact surface 132 is 100 °~160 °, example
Such as 140 °；And first contact surface 132 spherical radius R be 10mm~40mm, such as 16mm etc..The ball of first contact surface 132
Face subtended angle θ and spherical radius R is determined according to its corresponding joint implant surface size, so that the first contact surface 132 can
It is bonded joint implant surface.It should be noted that implanting instrument 1 can be equipped with different subtended angle θ's and spherical radius R
Multiple attacking heads 13 of first contact surface 132, so that implanting instrument 1 can be suitable for different size joint implants (because of joint
The implantation person of implantation material and it is different) implantation.
Optionally, the material of sealing ring 133 can be the elastic materials such as heat resistant type silica gel, can occur under outer power drive
Elastic deformation, and have good heat resistance.Amount of heat can be discharged in the moving process of negative pressure regulating piston 14, sealed
Circle 133 has good heat resistance, and influence of the heat to 133 structural stability of sealing ring can be made to minimize.
In the other embodiments of the utility model, the end surface of attacking head 13 is divided by the first accommodation groove 131
One contact surface 132 and the second contact surface 134.Second contact surface 134 and the first contact surface 132 are not integral face structure, i.e.,
The extended surface of second contact surface 134 and the first contact surface 132 is non-coplanar.Joint implant contacts corresponding on the surface of attacking head 13
Second contact surface 134 is provided with guidance contact surface 22, and the second contact surface 134 is bonded with guidance contact surface 22, to guide attacking head
13 alignment insertion joint implants, as shown in Figure 3.
Second contact surface 134 is a conical surface, is specially that a complete conical side surface removes obtained by top conical.Due to second
Contact surface 134 is different from the first contact surface 132, so that the end surface that attacking head 13 assembles joint implant is not integral face
Structure, the second contact surface 134 can guide the alignment insertion joint implant of attacking head 13, and avoid that attacking head 13 occurs and close
Save the relative rotation of both implantation materials central axis dislocation.The central axis of second contact surface 134 and the first contact surface 132 is default in one
Angle α, and to intersect at the first contact surface 132 separate for the central axis of the extended surface of the second contact surface 134 and the first contact surface 132
The side of handle body 12, the i.e. apex angle of complete circular cone corresponding to the second contact surface 134 are located at the first contact surface 132 far from handle body 12
Side.
Optionally, default angle α can be 10 °~40 °, such as 15 ° etc., it is not limited here.
Further, the end insertion handle body 12 that attacking head 13 is connect with handle body 12 is arranged, and attacking head 13 contacts handle body
At least one second accommodation groove 135 is formed on 12 end surface, the second accommodation groove 135 is embedded in handle body 12 along attacking head 13
End is circumferentially around setting, and for accommodating sealing ring 133,12 inner wall of handle body squeezes sealing ring 133, sealing ring 133 and handle body 12
Inner wall cooperatively forms sealing.It should be noted that sealing ring 133 and the first accommodation groove described above in the second accommodation groove 135
The sealing principle of sealing ring 133 in 131 is identical, and sealing ring 133 at least partly protrudes from except the second accommodation groove 135, is beating
Tap the head 13 insertion handle body 12 when, 12 inner wall of handle body squeeze sealing ring 133 formed sealing, to guarantee the closed loop of negative pressure space 15
Border.
Optionally, the second accommodation groove of twice 135 can be set on the end surface of the contact of attacking head 13 handle body 12, has been used for
Sealing ring 133 is placed, so that attacking head 13 and the formation of handle body 12 of implanting instrument 1 are stably connected with.Certainly, the second accommodation groove
135 quantity is including but not limited to described above, it is not limited here.
Further, it is provided with negative pressure hole 136 on the first contact surface 132 of attacking head 13, attacking head 13 is internally provided with
Negative pressure channel 137, the space in negative pressure channel 137 belong to a part of negative pressure space 15, and negative pressure channel 137 is in the first contact surface
Corresponding opening is negative pressure hole 136 on 132, to form vacuum suction between attacking head 13 and joint implant, so that
The stabilization of attacking head 13 holds on joint implant.
Optionally, negative pressure hole 136 may include the first negative pressure hole 1361 and multiple second negative pressure holes 1362.First negative pressure
Hole 1361 is set to the center of the first contact surface 132, is responsible for providing main negative pressure between attacking head 13 and joint implant and inhales
The effect of drawing.And to advanced optimize the distribution of negative pressure suction force between attacking head 13 and joint implant, guarantee attacking head 13
With joint implant reliable assembling, multiple second negative pressure hole, 1362 (examples are evenly distributed with along its circumferential direction on the first contact surface 132
Such as 6 or 8 the second negative pressure holes 1362), the diameter of the first negative pressure hole 1361 is greater than the diameter of the second negative pressure hole 1362, and second
Negative pressure hole 1362 is to assist the first negative pressure hole 1361.By designing multiple second negative pressure holes 1362 and in the first contact surface 132
On be uniformly distributed, the negative pressure suction force of negative pressure space 15 can be made to be evenly distributed on connecing for attacking head 13 and both joint implants
In contacting surface, optimization attacking head 13 is acted on joint implant vacuum suction between the two, greatly improves attacking head 13 and joint
The degree of stability of implantation material vacuum suction between the two.
It is understood that the set-up mode of the first negative pressure hole 1361 and the second negative pressure hole 1362 is not limited to above
It is described.For example, the diameter of the first negative pressure hole 1361 can be provided less than the second negative pressure hole 1362 by the second negative pressure hole 1362
Main vacuum suction effect；Or second negative pressure hole 1362 on the first contact surface 132 and non-uniform Distribution, it might even be possible to be
Arbitrary distribution is on the first contact surface 132；Also or the first contact surface 132, which only designs, the first negative pressure hole 1361 or the second negative pressure
Hole 1362 etc..The negative pressure hole 136 that the present embodiment is illustrated is intended to optimize the vacuum suction between attacking head 13 and joint implant
Effect, diameter and quantity etc. are herein without limitation.
It should be noted that attacking head 13 is bonded assembly with joint implant 2.The mechanical masterpiece that strike end cap 11 is received
It is transferred to attacking head 13 with by handle body 12, and passes the mechanical force via attacking head 13 and the contact surface of joint implant
It is handed to joint implant, to carry out the implantation work of joint implant.Attacking head 13 is contacted as with the direct of joint implant
Structure, to avoid in the transmittance process of mechanical force, attacking head 13 and joint implant damage, attacking head 13 can be
Elastic material, has certain elastic deformation ability, plays buffer function with the transmitting to mechanical force, to ensure attacking head 13
With the structural reliability of joint implant.
Optionally, the material of attacking head 13 can be polyformaldehyde or polyphenylsulfone etc..Polyformaldehyde (POM) is also referred to as acetal, gathers
Acetal is a kind of engineering thermoplasties, for needing high rigidity, the precise part of low friction and excellent in dimension stability.It is poly-
Benzene sulfone (PPSF or PPSU) is a kind of high-performance polymer, is usually made of the aromatic rings that sulfone (SO2) group connects.Polyphenylsulfone is resistance to
Heat is functional with chemicals-resistant, plastic to apply for rapid prototyping manufacturing and quick manufacture (Direct Digital manufacture)
Plastics.
Further, negative pressure regulating piston 14 is embedded in handle body 12, negative pressure regulating piston 14 close to attacking head 13 one
End section shape is mutually matched with 12 intracavity section of handle body, and negative pressure regulating piston 14 close to attacking head 13 segment section it is outer
Diameter is equal to 12 internal diameter of handle body, and the segment section of negative pressure regulating piston 14 contacts 12 inner wall of handle body.
Please refer to Fig. 1,2 and 8.To reduce the frictional resistance between negative pressure regulating piston 14 and 12 inner wall of handle body, negative pressure
Regulating piston 14 is less than 12 internal diameter of handle body far from the segment section outer diameter of attacking head 13, and the segment section of negative pressure regulating piston 14 does not connect
12 inner wall of handle body is touched, the contact surface of negative pressure regulating piston 14 and 12 inner wall of handle body is reduced, to reduce negative pressure regulating piston 14 and handle
Frictional resistance between 12 inner wall of body.
At least one third accommodation groove 141, third are formed on the surface of contact 12 inner wall of handle body of negative pressure regulating piston 14
Accommodation groove 141 along negative pressure regulating piston 14 circumferentially around setting, for accommodating sealing ring (not identifying in figure), third accommodation groove
The sealing ring assembled in 141 is identical as the material of sealing ring 133 described above and sealing principle, and details are not described herein again.
Similarly, the sealing ring in third accommodation groove 141 at least partly protrudes from except third accommodation groove 141, in negative pressure regulating piston
When in 14 insertion handle bodies 12,12 inner wall of handle body squeezes sealing ring, to cooperatively form sealing, guarantees the closed loop of negative pressure space 15
Border.
Optionally, twice third accommodation groove can be set on the surface of the contact of negative pressure regulating piston 14 12 inner wall of handle body
141, for placing sealing ring, so that attacking head 13 and the formation of handle body 12 of implanting instrument 1 are stably connected with.Certainly, third
The quantity of accommodation groove 141 is including but not limited to described above, it is not limited here.It is understood that negative pressure regulating piston 14
On third accommodation groove 141 be preferably disposed on negative pressure regulating piston 14 contact 12 inner wall of handle body surface close to the area of attacking head 13
Domain, to guarantee the closed environment of negative pressure space 15.
In the present embodiment, implanting instrument 1 further comprises that negative pressure adjusts handle of gear 16.Negative pressure adjusts handle of gear 16 and is set to handle
The end setting of 12 outside of body and corresponding negative pressure regulating piston 14 far from attacking head 13.Negative pressure adjusts handle of gear 16 and passes through a connecting pin
Nail 17 is connect with negative pressure regulating piston 14.User holds on negative pressure and adjusts handle of gear 16, and the axial direction along 1 handle body 12 of implanting instrument is moved
Dynamic negative pressure adjusts handle of gear 16 so that negative pressure adjust handle of gear 16 handle body 12 lateral surface along handle body 12 axial movement, thus band
Negative pressure regulating piston 14 is moved in handle body 12 along the axial movement of handle body 12, and then forms above-mentioned negative pressure sky in implanting instrument 1
Between 15 so that attacking head 13 stabilization hold on joint implant.
Please refer to Fig. 9.12 hollow out of handle body is provided with the first guiding groove 121, and the width of the first guiding groove 121 matches connecting pin
The diameter of nail 17, can be the diameter slightly larger than connecting pin 17, so that connecting pin 17 can be moved along the first guiding groove 121
It is dynamic.First guiding groove 121 includes interconnected first axis guiding groove 1211 and the first circumferential guiding groove 1212.First axle
To guiding groove 1211 along the axial setting of handle body 12, for guiding connecting pin 17 to move axially along handle body 12, to form negative pressure sky
Between 15.First circumferential guiding groove 1212 is along the circumferential setting of handle body 12, for guiding connecting pin 17 circumferentially to move along handle body 12, and
When connecting pin 17 slides into the first circumferential guiding groove 1212, negative pressure regulating piston 14 is limited inside handle body 12 along 12 axis of handle body
Upward position, and then realize the pressure maintaining to negative pressure space 15, to maintain the subnormal ambient in negative pressure space 15.
In the other embodiments of the utility model, the first guiding groove 121 may include the multiple first circumferential guiding grooves
1212, the multiple first circumferential guiding grooves 1212 are arranged along 12 axially spaced-apart of handle body.Negative pressure, which adjusts handle of gear 16, can drive connecting pin
17 slide into the circumferential guiding groove 1212 of different first, so that negative pressure space 15 has different negative pressure values, so that attacking head 13 has
Different negative pressure suction forces, and then attacking head 13 is enable to hold on the joint implant of different weight.Negative pressure value defines negative pressure
The magnitude of pressure differential in space 15 and 1 external pressure of implanting instrument.The first circumferential guiding groove 1212 that connecting pin 17 is slid into arrives
The distance of attacking head 13 is bigger, and negative pressure space 15 and the pressure difference of 1 external pressure of implanting instrument are bigger, so that attacking head 13 is had
Standby negative pressure suction force is bigger, can hold on more heavy weight joint implant.
Optionally, the first guiding groove 121 may include there are three the first circumferential guiding groove 1212, this three first are circumferentially drawn
Guide groove 1212 is along the axial arranged at equal intervals of handle body 12, so that implanting instrument 1 has the different degrees of negative pressure suction force of three gears, more preferably
Ground meets in clinic the needs of for the implantation of different joint implants.Certainly, it the quantity of the first circumferential guiding groove 1212 and sets
The mode of setting is not limited to described above, can need to be arranged the first circumferential guiding groove 1212 of different number according to clinic, with
So that implanting instrument 1 is capable of providing the different degrees of negative pressure suction force of multi gear, and then improves the applicability of implanting instrument 1.
In the other embodiments of the utility model, implanting instrument 3 is included in symmetrically arranged two groups of its 31 two sides of handle body
Negative pressure adjusts handle of gear 32.Two groups of negative pressure adjusting handle of gear 32 respectively correspond negative pressure regulating piston 33 and set far from the end of attacking head 34
It sets, and two groups of negative pressure adjust and run through a connecting pin 35 between handle of gear 32 and 33 three of negative pressure regulating piston, to fix three
The relative position of person.Accordingly, 31 side wall hollow out of handle body is provided with symmetrical two group of first guiding groove 311, and every group of negative pressure is adjusted
Handle of gear 32 corresponds to one group of first guiding groove 311, along handle body 31 axial and circumferential for guiding this group of negative pressure to adjust handle of gear 32
It is mobile, as shown in Figure 10.
Two groups of negative pressure, which are symmetrical arranged, with its 31 two sides of handle body of implanting instrument 3 adjusts handle of gear 32 and two group of first guiding groove
For 311, negative pressure adjusts handle of gear 32 and is moved to different stalls, and negative pressure space 36 has the volume of respective notch, so that negative pressure is empty
Between 36 different degrees of difference is presented with the pressure difference of 3 external pressure of implanting instrument, so that implanting instrument 3 be made to be capable of providing multi gear
Different degrees of negative pressure suction force, and then improve the applicability of implanting instrument 3, as shown in figure 11.
Please continue to refer to Fig. 1-2.In the present embodiment, load component of the strike end cap 11 as implanting instrument 1 comprising
Load portion 111 and interconnecting piece 112.Interconnecting piece 112 is embedded in handle body 12 and is arranged, and load portion 111 is set to interconnecting piece 112 far from beating
Tap the head 13 end, interconnecting piece 112 is structure as a whole with load portion 111.Load portion 111 is used for far from the end face of interconnecting piece 112
Receive mechanical force (such as the effects of percussion power).Receive mechanical force, the stress in load portion 111 to guarantee stabilization
Face area design is that it is big to be specifically as follows end face diameter of the load portion 111 far from interconnecting piece 112 greater than 12 cross-sectional area of handle body
It is arranged in 12 outer diameter of handle body, so that strike end cap 11 is capable of providing a biggish stress surface to receive mechanical force, to protect
Card implanting instrument 1, which can be stablized, receives mechanical force.
Please refer to Figure 12.Guide pin 113, handle body 12 are provided on the side that interconnecting piece 112 is contacted with 12 inner wall of handle body
113 hollow out of guide pin is corresponded to close to the end of strike end cap 11 and is provided with the second guiding groove 122, and the second guiding groove 122 is used for
Guidance guide pin 113 is slided along the second guiding groove 122, so that strike end cap 11 is locked in 12 end of handle body.Second guiding groove
122 are specifically as follows the groove body axially extending along handle body 12 mutually staggered including two, and therebetween by one along handle
The connection of 12 circumferentially extending groove body of body.To hit that the guide pin 113 on end cap 11 is directed at 1 handle body of implanting instrument, 12 tail portion the
Two guiding grooves 122, take advantage of a situation and are pushed into bottom along axial direction, are pushed into bottom along axial direction again after then circumferentially rotatable, so that strike end
It is consolidated between lid 11 and handle body 12 and locks and be reliably connected.It should be noted that strike end cap 11 and handle body 12 are completed to lock
Afterwards, load portion 111 supports 12 end of handle body and guide pin 113 equally supports the bottom of the second guiding groove 122, load portion
The contact surface and guide pin 113 and the second guiding groove that 111 mechanical forces received pass through load portion 111 and 12 end of handle body
The contact surface of 122 bottoms is transferred to handle body 12, and is transferred to attacking head 13 via handle body 12, acts at attacking head 13 and is assembled
Joint implant on, to carry out joint implant implantation.
In view of the anatomical condition of different sufferers is different, to ensure that implanting instrument 1 can be assembled attacking head 13
Joint implant send to implantation position, the entire length of implanting instrument 1 be designed as be greater than 450mm.And for convenience of implantation work
Tool 1 gripping and avoid in joint implant implantation process occur implanting instrument 1 slip out of the hand, in 1 handle body 12 of implanting instrument
Annular knurl or roughening setting at this, such as frosted processing etc. can be set in (i.e. 12 outer surface of handle body) at gripping, by handle
12 outer surface of body is arranged anti-skid structure 18 and reaches anti-skidding effect to increase the frictional resistance of 12 grip position of handle body on implanting instrument 1
Fruit.
It should be noted that since strike end cap 11, guide pin 113 and handle body 12 are the master for bearing mechanical force
Structure is wanted, enough intensity is needed to have, therefore hits end cap 11, guide pin 113 and handle body 12 and preferably uses stainless steel
Material (such as 17-4/630 or 316L etc.).
The material selection that handle of gear 16 and connecting pin 17 are adjusted for negative pressure regulating piston 14, negative pressure, needs to guarantee
It is the structural strength of connecting pin 17 not less than negative pressure regulating piston 14 and negative pressure adjusting handle of gear 16.The material of three is optional
Stainless steel material, polyformaldehyde and polyphenylsulfone etc. are selected, when negative pressure regulating piston 14 and negative pressure adjust the material of handle of gear 16 as not
When rust steel, the material of connecting pin 17 is then it is not recommended that selection polyformaldehyde and polyphenylsulfone, avoid connecting pin 17 due to anti-shearing
Intensity is insufficient, causes its failure by shear.
It is understood that each component (such as attacking head 13, strike end cap 11 etc.) is removable removes stage makeup and costume in implanting instrument 1
With mode, in order to maintenance workers such as each components of convenient replacing implanting instrument 1 and the cleaning and sterilizings that facilitates implanting instrument 1
Make.For example, it hits and is connected between end cap 11 and 12 end of handle body using the locking of guide pin 113 and the second guiding groove 122
Mode is connect, can guarantee to hit the convenient for disassembly and assembly efficient of end cap 11 while stable connection；Attacking head 13 and handle body 12 it
Between be similarly detachable assembly, multiple and different attacking heads 13 can be equipped in clinic to be adapted to different joint implant structures,
And only need 1 handle body 12 of an implanting instrument that the replacements of different attacking heads 13 can be realized, in order to clinical use.
Below according to the specific structure of the illustrated implanting instrument 1 of above-described embodiment, illustrate that the group of implanting instrument 1 substantially is filled with
And use process:
The tool assemble process of implanting instrument 1 provided by the present embodiment is substantially are as follows: according to the ruler of joint implant structure
The corresponding attacking head of very little selection 13 (such as the attacking head of corresponding suitable diameter is selected according to the diameter of acetabular cup or acetabular bone liner
13), it is then inserted into 1 handle body of implanting instrument, 12 head.The guide pin 113 on end cap 11 will be hit and be directed at implanting instrument 1
Second guiding groove 122 of 12 tail portion of handle body, takes advantage of a situation and is pushed into bottom along axial direction, is pushed into again along axial direction after then circumferentially rotatable
Locking is completed at bottom.
The use process of implanting instrument 1 provided by the present embodiment is substantially are as follows: by taking acetabular cup or acetabular bone liner as an example.Implantation
1 attacking head of tool, 13 side is inserted into acetabular cup or acetabular bone liner, so that sealing ring and acetabular cup or acetabular bone on attacking head 13
Liner fits closely.By negative pressure adjust handle of gear 16, by its along axial direction be promoted to suitable gear after it is circumferentially rotatable after locking, shape
At enough vacuum suctions, acetabular cup or acetabular bone liner are firmly held on.According to hip replacement surgery demand, according to sufferer
Anatomical features, acetabular cup or acetabular bone liner are placed into suitable position, followed by physics hit part (such as hammer etc.),
Implement hammering on the tail portion of implanting instrument 1 strike end cap 11, to complete the implantation of acetabular cup or acetabular bone liner.
In conclusion implanting instrument provided by the utility model, end face of the strike end cap far from handle body is for receiving
Mechanical force, and the mechanical force is transferred to the joint implantation being assemblied on attacking head by handle body and attacking head
Object, to carry out the implantation work of the joint implant.Wherein, end of the attacking head far from handle body is for assembling joint implant simultaneously
It is bonded joint implant surface, so that the contact surface area of attacking head and joint implant maximizes, guarantees that mechanical force can
It concentrates by alleviating the stress on attacking head and joint implant contact surface while transmitting, is implanted into improve attacking head with joint
The structural reliability of object.Implanting instrument handle is provided with negative pressure regulating piston in handle body, negative pressure regulating piston can as hollow structure
It is moved axially along handle body, to cooperatively form negative pressure space with handle body and attacking head, so that attacking head be enable reliably to hold on
The joint implant of assembly is bonded with it.Implanting instrument can steadily hold on integral type acetabular cup by negative pressure, convenient for making
User accurately controls and adjusts the implantation position and angle of joint implant, while an implanting instrument only being needed to can be completed
Holding assembling and the strike of joint implant are implanted into, and are facilitated the implantation process of joint implant, the operating time are reduced, to improve
The convenience of articular prosthesis (implantation material) implantation.
The foregoing is merely the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all
It is equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, directly or indirectly uses
In other related technical areas, it is also included in the patent protection scope of the utility model.
Claims (17)
1. a kind of implanting instrument, which is characterized in that the implanting instrument is implanted into applied to joint prosthesis, and the implanting instrument includes
End cap, handle body and attacking head are hit, handle body both ends are respectively fitted with the strike end cap and the attacking head, described
For assembling joint implant and being bonded joint implant surface, the strike end cap is remote for end of the attacking head far from the handle body
End face from the handle body is transferred to by the handle body and the attacking head for receiving mechanical force and is assemblied in institute
State the joint implant on attacking head；
The handle is provided with negative pressure regulating piston in the handle body, the negative pressure regulating piston can be along described as hollow structure
Handle body axial movement, to cooperatively form negative pressure space with the handle body and the attacking head, so that the attacking head be made to hold
The joint implant of assembly is firmly bonded with it.
2. implanting instrument according to claim 1, which is characterized in that the attacking head is used to assemble the end of joint implant
Be formed with the first accommodation groove on portion outer surface, first accommodation groove along the attacking head end surface circumferentially around setting,
First accommodation groove is for accommodating sealing ring and being divided into the end surface that the attacking head is used to assemble joint implant
First contact surface and the second contact surface；
First contact surface can be bonded the surface of joint implant, so that the sealing ring contacts the joint implant surface
And sealing is formed, so that the joint implant, the attacking head, the handle body and the negative pressure regulating piston cooperatively form
The negative pressure space, so that the attacking head holds on the joint implant；
Second contact surface is used to guide the strike with guidance contact surface corresponding on joint implant surface cooperation
Head alignment is embedded in the joint implant.
3. implanting instrument according to claim 2, which is characterized in that first contact surface be a spherical surface, described first
The corresponding subtended angle of contact surface is 100 °~160 °, and the spherical radius of first contact surface is 10mm~40mm.
4. implanting instrument according to claim 3, which is characterized in that second contact surface be a conical surface, described second
The central axis of contact surface and first contact surface is in a default angle, and the extended surface of second contact surface and described the
The central axis of one contact surface intersects at side of first contact surface far from the handle body.
5. implanting instrument according to claim 4, which is characterized in that the default angle is 10 °~40 °.
6. implanting instrument according to claim 3, which is characterized in that be provided with negative pressure hole on first contact surface, institute
Negative pressure hole is stated to be connected to the negative pressure space.
7. implanting instrument according to claim 6, which is characterized in that the negative pressure hole includes the first negative pressure hole and multiple
Second negative pressure hole, first negative pressure hole are set to the center of first contact surface, and the multiple second negative pressure hole is described in
The circumferential direction of first contact surface is uniformly distributed.
8. implanting instrument according to claim 7, which is characterized in that the diameter of first negative pressure hole is greater than described second
Negative pressure hole.
9. implanting instrument according to claim 2, which is characterized in that the attacking head is elastic material, to the machine
Buffer function is played in the transmitting of tool power.
10. implanting instrument according to claim 2, which is characterized in that the end that the attacking head is connect with the handle body
It is embedded in handle body setting, and the attacking head contacts and is formed at least one second accommodating on the end surface of the handle body
Slot, second accommodation groove are embedded in the end of the handle body circumferentially around setting, for accommodating sealing ring, institute along the attacking head
It states sealing ring and the handle body inner wall cooperatively forms sealing.
11. implanting instrument according to claim 1, which is characterized in that the negative pressure regulating piston is embedded in the handle body
In, and the negative pressure regulating piston contacts and is formed at least one third accommodation groove on the surface of the handle body inner wall, described
Three accommodation grooves along the negative pressure regulating piston circumferentially around setting, for accommodating sealing ring, the sealing ring and the handle body
Inner wall cooperatively forms sealing.
12. implanting instrument according to claim 11, which is characterized in that the implanting instrument further comprises that negative pressure is adjusted
Handle of gear, the negative pressure adjust handle of gear and are set on the outside of the handle body and correspond to the negative pressure regulating piston far from the attacking head
End setting, the negative pressure adjust handle of gear and are connect by a connecting pin with the negative pressure regulating piston, and the negative pressure adjusts shelves
Can the handle body lateral surface along the axial movement of the handle body, and then drive the negative pressure regulating piston in the handle body
The interior axial movement along the handle body.
13. implanting instrument according to claim 12, which is characterized in that the handle body hollow out is provided with the first guiding groove,
The negative pressure, which adjusts handle of gear, can drive the connecting pin to move along first guiding groove；
First guiding groove includes interconnected first axis guiding groove and the first circumferential guiding groove, the first axis
Guiding groove is axially arranged along the handle body, described negative to be formed for guiding the connecting pin to move axially along the handle body
Press space；Described first circumferential guiding groove is circumferentially arranged along the handle body, for guiding the connecting pin along the handle body week
To movement, and when the connecting pin slides into the described first circumferential guiding groove, the negative pressure regulating piston is limited in the handle
Position inside body in the handle body axial direction, and then realize the pressure maintaining to the negative pressure space.
14. implanting instrument according to claim 13, which is characterized in that first guiding groove includes multiple described first
Circumferential guiding groove, the multiple first circumferential guiding groove are arranged along the handle body axially spaced-apart, and the negative pressure adjusts handle of gear can band
It moves the connecting pin and slides into the circumferential guiding groove of different first, so that the negative pressure space has different negative pressure values.
15. implanting instrument according to claim 1, which is characterized in that the strike end cap includes load portion and connection
Portion, the interconnecting piece are embedded in the handle body setting, and the load portion is set to end of the interconnecting piece far from the attacking head,
The interconnecting piece is structure as a whole with the load portion, and the load portion is greater than the handle far from the end face diameter of the interconnecting piece
Body outer diameter and its be used to receive mechanical force.
16. implanting instrument according to claim 15, which is characterized in that the interconnecting piece is contacted with the handle body inner wall
Guide pin is provided on side, the handle body corresponds to the guide pin hollow out close to the end of the strike end cap and is provided with
Second guiding groove, second guiding groove is for guiding the guide pin to slide along second guiding groove, so that described beat
End caps are hit in handle body end.
17. implanting instrument according to claim 1, which is characterized in that handle body outer surface is provided with anti-skid structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820752362.XU CN208851721U (en) | 2018-05-18 | 2018-05-18 | A kind of implanting instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820752362.XU CN208851721U (en) | 2018-05-18 | 2018-05-18 | A kind of implanting instrument |
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| CN208851721U true CN208851721U (en) | 2019-05-14 |
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| CN (1) | CN208851721U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108578021A (en) * | 2018-05-18 | 2018-09-28 | 苏州玄陶商务咨询有限公司 | A kind of implanting instrument |
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2018
- 2018-05-18 CN CN201820752362.XU patent/CN208851721U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108578021A (en) * | 2018-05-18 | 2018-09-28 | 苏州玄陶商务咨询有限公司 | A kind of implanting instrument |
| CN108578021B (en) * | 2018-05-18 | 2024-03-15 | 苏州黑桃医疗科技有限公司 | Implantation tool |
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Effective date of registration: 20210903 Address after: 215000 No. 2, Zhongshi Road, Caohu street, Xiangcheng economic and Technological Development Zone, Suzhou, Jiangsu Patentee after: Suzhou spade Medical Technology Co.,Ltd. Address before: 215000 Room 102, building 7, Xujiang new village, Suzhou City, Jiangsu Province Patentee before: SUZHOU XUANTAO BUSINESS CONSULTING Co.,Ltd. |