CN207186681U - A kind of knockdown brothers' intramedullary needle embedded with minimal invasion system - Google Patents
A kind of knockdown brothers' intramedullary needle embedded with minimal invasion system Download PDFInfo
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- CN207186681U CN207186681U CN201720209892.5U CN201720209892U CN207186681U CN 207186681 U CN207186681 U CN 207186681U CN 201720209892 U CN201720209892 U CN 201720209892U CN 207186681 U CN207186681 U CN 207186681U
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Abstract
It the utility model is related to medical instruments field, and in particular to a kind of knockdown brothers' intramedullary needle embedded with minimal invasion system.The system includes intramedullary needle, expands marrow pointed cone and keeper;Intramedullary needle includes intramedullary needle body, and one end of intramedullary needle body is provided with the first tip, and the first tip is for bluff body and with intramedullary needle body into angle;Expanding marrow pointed cone includes expanding marrow pointed cone body, and the one end for expanding marrow pointed cone body is provided with the second tip of triangular pyramid;Keeper includes abutment sleeve and position fixing handle, abutment sleeve is the round platform provided with axial pass-through holes, and round platform is axially perpendicular to position fixing handle, and its larger bottom surface and one end of position fixing handle are amplexiformed, less bottom edge is provided with a circle sawtooth, and the side wall of round platform is communicated with the fluting of axial pass-through holes.The utility model improves direct motion intramedullary needle secondary the step of finding into nail point during inserting in the prior art, simplifies operating process, reduces the generation of postoperative complications, has very big application and popularization value in medical instruments field.
Description
Technical field
It the utility model is related to medical instruments field, and in particular to a kind of knockdown brothers' intramedullary needle embedded with minimal invasion system
System.
Background technology
Phalangeal fracture, fracture of metacarpal bone are the common fracture of hand, account for the 75% and 20% of Treat Hand Fracture;Fracture of metatarsus is
The common fracture of foot, accounts for the 35% of foot fractures.For the fracture at most above-mentioned positions, open reduction steel plate can be used
Therapeutic scheme fixed in fixed or closed reduction intramedullary needle is treated in screw.In open reduction steel plate screw fix due to
Big, neural blood vessel damage and postoperative adhesion of tendon incidence height are peeled off to soft tissue, and needs second operation to take out steel plate screw,
Recover to bring difficulty to patient.And traditional Kirschner wire fixation is inserted using driving in the wrong direction, backshank is placed in below poor skin, often band
Carry out patient's discomfort.And during intramedullary needle is inserted in direct motion, expand the step of marrow pointed cone is replaced by intramedullary needle, due to its opening very
It is small, often result in and find, increase operating time difficult into nail point, or even need to increase perspective number.
Utility model content
In order to solve the above-mentioned technical problem, the utility model provides a kind of knockdown brothers' intramedullary needle embedded with minimal invasion system
System, it includes:Intramedullary needle, expand marrow pointed cone and keeper;The intramedullary needle includes intramedullary needle body, the intramedullary needle body
One end is provided with the first tip, and for the described first sophisticated and intramedullary needle body into 165 °~175 ° of angle, described first is sophisticated
For bluff body;The expansion marrow pointed cone includes expanding marrow pointed cone body, and described one end for expanding marrow pointed cone body is provided with the second tip, described
Second tip is triangular pyramid;The keeper includes abutment sleeve and position fixing handle, and the abutment sleeve is to be passed through provided with axial direction
The round platform of through hole, the round platform is axially perpendicular to the position fixing handle, and its larger bottom surface and one end of position fixing handle are amplexiformed,
Less bottom edge is provided with a circle sawtooth, so that the abutment sleeve is fixed on bone surface, the expansion marrow point when in use
Second tip of cone can penetrate axial pass-through holes from the larger bottom surface, and be passed from the smaller bottom surface, the side of the round platform
Wall is communicated with the fluting of the axial pass-through holes, so that the first tip of the intramedullary needle is penetrated by the fluting tiltable
In axial pass-through holes, and passed from less bottom surface.
Knockdown brothers' intramedullary needle embedded with minimal invasion system of the present utility model, mainly by intramedullary needle, expand marrow pointed cone and
Three part compositions such as keeper, although each part is independent individual, cooperate when in use.In use, first
The sawtooth terminal spine of abutment sleeve is entered into bone, so that abutment sleeve is fixed on bone surface;Then the second point of marrow pointed cone will be expanded
End penetrates axial pass-through holes from larger bottom surface, then is passed from the smaller bottom surface and be pierced into bone, passes through the tip of triangular pyramid
Expand cortex of bone opening;Then withdraw from and expand marrow pointed cone, be held in position that sleeve portion is constant, by the first tip of intramedullary needle along positioning
The fluting of sleeve is tilted and penetrated in axial pass-through holes, is then passed and is entered in bone, rotary intramedullary pin from the smaller bottom surface of round platform
With the direction at the tip of adjustment first, intramedullary needle is set to enter distal bone folded block by fracture site, rotary intramedullary pin to adjust again
The direction at the first tip, so as to complete the reduction of the fracture.
It can be seen that the utility model does not need the large-scale otch in traditional operation, it is not necessary to is widely separated and exposes fracture and breaks
End, it is only necessary to appropriate otch is done in operative site, accommodates abutment sleeve tip, or even is fixed temporarily outside skin with barrel tip,
So as to otch of not performing an operation, directly expand marrow using pointed cone, a postoperative only pin is sutured or do not sutured, using skin membrane or exempts to suture
Glue closes wound, simple and convenient, and the infringement to patient is reduced.And point is also solved by abutment sleeve, the utility model
The difficulty into pin mark is found when changing intramedullary needle after cone expansion marrow again, it is convenient to insert intramedullary needle in pulp cavity.The tip of intramedullary needle
(i.e. described first tip) is designed as the bluff body of passivity, avoids and pierces through articular surface during the hand-manipulating of needle.
Preferably, in addition to it is available for the intramedullary needle and expands the shared handle of pin cone that marrow pointed cone is used alternatingly, the pin cone
Sharing handle includes handle main body, and the handle main body right-hand member axially offers blind hole;It is sharp with first in the intramedullary needle body
Relative one end is held to be provided with first end, described expand in marrow pointed cone body is provided with second end with second sophisticated relative one end,
The first end and second end can be inserted separately into the blind hole.
Preferably, locating part is additionally provided with the handle main body, the locating part is used for the first end to penetrating blind hole
Or second end is fixed, the locating part includes ball, compression spring and slip cap;The ball, which runs through, is arranged on blind hole
Side wall on, and the diameter of ball be more than the side wall thickness;The slip cap axially offers the through hole run through, described logical
Hole includes the less first through hole of internal diameter and larger the second through hole of internal diameter, the first through hole slip over ball be axially socketed in it is blind
The periphery in hole, and be connected with the slid of the blind hole;The compression spring is axially in second through hole, and one end
Offseted with the right-hand member of the blind hole, the right-hand member of the other end and second through hole offsets;The first end and second end
Periphery is circumferentially with the annular groove to match with ball, and annular groove is completed together with ball to first end and the second end
The restriction at end.
Preferably, the length of first end and second end is 1.8~2.2cm, preferably 2cm.
Preferably, the material of the intramedullary needle is titanium alloy.
Preferably, described first it is sophisticated with the intramedullary needle body into 170 ° of angles;With or, it is described first tip length
For 8~12mm, preferably 1cm.
Preferably, the edge at first tip is provided with rounding, further mitigates and avoids the damage to articular surface.
Preferably, the top of the fluting is located at the larger bottom surface of the round platform, relatively handle of the end apart from the round platform
4.5~5.5mm of face, preferably 5mm.
Preferably, the length of the abutment sleeve is 1.8~2.2cm (preferably 2cm), the diameter of the smaller bottom surface of round platform
For 2.8~3.2mm (preferably 3mm), angle formed by two buses on the round platform radial direction vertical section is 4.5 °~5.5 ° (excellent
Select 5 °);
Preferably, the length of the position fixing handle is 4.5~5.5cm, preferably 5cm.
Preferably, the intramedullary needle body is the cylinder that height is 13~17cm (preferably 15cm), and a diameter of
Any of 1.6mm, 2.0mm or 2.4mm;And/or the expansion marrow pointed cone body is that height is 8~12cm (preferably 10cm)
Cylinder, and any of a diameter of 2.0mm, 2.5mm or 3.0mm.
Above-mentioned technical proposal of the present utility model has the advantages that:
1st, the big otch of traditional operation is not needed by described abutment sleeve, the utility model, it is not necessary to be widely separated
With exposure fracture site, it is only necessary to do 3mm or so otch in operative site, accommodate abutment sleeve tip, or even use barrel tip
It is temporarily fixed outside skin, so as to otch of not performing an operation, directly expand marrow using pointed cone, a postoperative only pin is sutured or do not sutured, adopts
With skin membrane or exempt to suture glue closure wound.And operating process is simplified, while is improved in the prior art in direct motion marrow
Pin secondary the step of finding into nail point during inserting.
2nd, the first tip of the utility model intramedullary needle is formed an angle with intramedullary needle body, and manipulative reduction is removed in operation
Outside, rotatable pin cone shares the tip of handle remote control first, is easy to correct displacement and the angulation deformity of fracture distal end, and then complete
It is simple and convenient into the reduction of the fracture.And the first tip of the utility model intramedullary needle is the bluff body of passivity, and it is remote to avoid puncture
The articular surface at end, reduce the generation of postoperative complications, alleviate patient suffering;Thus the utility model is in medical instruments field
With great application and popularization value.
3rd, the locating part that handle main body of the present utility model is provided with is made up of ball, compression spring and slip cap etc., is made
Used time, the first through hole of slip cap is slided to the left along blind hole outer wall, because the internal diameter of the second through hole is more than in first through hole
Footpath, therefore in slip cap to the left sliding process, when the second through hole passes through ball, ball is just temporarily to the inner side of the second through hole
Wall slides, and now can then unclamp slip cap by first end or second end insertion blind hole, and compression spring resets, the
One through hole and the second through hole move to right, and the madial wall of first through hole goes back to ball top original position, and ball is just stuck in first
In the annular groove of end or second end, so as to complete the fixation of first end or second end, that is, cause intramedullary needle or expansion
Marrow pointed cone is securely fixed in handle main body.It can be seen that the locating part is ingenious in design, simple in construction, position-limiting action is good, and is easy to
Use.
Brief description of the drawings
Fig. 1 is the top view of the intramedullary needle of the utility model embodiment;
Fig. 2 is the side view of the intramedullary needle of the utility model embodiment;
Fig. 3 is the structural representation of the expansion marrow pointed cone of the utility model embodiment;
Fig. 4 is the structural representation of the keeper of the utility model embodiment;
Fig. 5 is the side view of the keeper of the utility model embodiment;
Fig. 6 is the top view of the keeper of the utility model embodiment;
Fig. 7 is that the pin marrow of the utility model embodiment shares the structural representation of handle;
Fig. 8 is that the intramedullary needle of the utility model embodiment and pin marrow share the structural representation after handle combination;
Wherein, 1, intramedullary needle;1-1, the first tip;1-2, intramedullary needle body;1-3, first end;2nd, marrow pointed cone is expanded;2-
1st, the second tip;2-2, expand marrow pointed cone body;2-3, second end;3rd, keeper;3-1, abutment sleeve;3-2, position fixing handle;
3-3, sawtooth;3-4, axial pass-through holes;3-5, fluting;4th, pin cone shares handle;4-1, handle main body;4-2, blind hole;4-4, rolling
Pearl;4-5, compression spring;4-6, slip cap.
Embodiment
Embodiment of the present utility model is described in further detail with reference to the accompanying drawings and examples.Following examples
For illustrating the utility model, but can not be used for limiting the scope of the utility model.
In description of the present utility model, unless otherwise indicated, term " first ", " second ", " the 3rd " etc. are only used for retouching
Purpose is stated, and it is not intended that instruction or hint relative importance.Term " on ", " under ", "left", "right", " interior ", " outer ", " preceding
End ", " rear end ", " head ", the orientation of the instruction such as " afterbody " or position relationship be based on orientation shown in the drawings or position relationship,
It is for only for ease of description the utility model and simplifies and describe, rather than indicates or imply that signified device or element must have
Specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.Unless otherwise bright
True regulation and restriction, term " installation ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, also may be used
To be to be detachably connected, or it is integrally connected;Can be joined directly together, can also be indirectly connected by intermediary.For this
For the those of ordinary skill in field, concrete condition can be regarded and understand concrete meaning of the above-mentioned term in the utility model.
As shown in Fig. 1~8, a kind of knockdown brothers' intramedullary needle embedded with minimal invasion system is present embodiments provided, it includes:
The intramedullary needle 1 of titanium alloy (Ti6Al4V) material, expand marrow pointed cone 2, keeper 3 and be available for the intramedullary needle 1 and expand marrow pointed cone 2
The pin cone being used alternatingly shares handle 4.
Intramedullary needle 1 includes intramedullary needle body 1-2, and intramedullary needle body 1-2 both ends are respectively equipped with the first sophisticated 1-1 and first
End 1-3;Shared in use, first end 1-3 is inserted in pin cone in handle 4;First sophisticated 1-1 and intramedullary needle body 1-2 into
170 ° of angles, the first sophisticated 1-1 edge are provided with rounding.The cylinder that it is highly 15cm that intramedullary needle body 1-2, which is, and diameter
For 2.0mm;First sophisticated 1-1 length is 1cm, and first end 1-3 length is 2cm.
Expanding marrow pointed cone 2 includes expanding marrow pointed cone body 2-2, and the both ends for expanding marrow pointed cone body 2-2 are respectively equipped with the second sophisticated 2-1
With second end 2-3;Shared in use, second end 2-3 is inserted in pin cone in handle 4;Second sophisticated 2-1 is triangular pyramid;
Expand marrow pointed cone body 2-2 to be the cylinder for being highly 10cm, and a diameter of 2.5mm;Second end 2-3 length is 2cm.
Keeper 3 includes abutment sleeve 3-1 and position fixing handle 3-2;Abutment sleeve 3-1 is provided with axial pass-through holes 3-4's
Round platform;The round platform is located at position fixing handle 3-2 lower section, and is axially perpendicular to position fixing handle 3-2, and its larger bottom surface is with determining
Position handle 3-2 one end is amplexiformed, and less bottom edge is provided with a circle sawtooth 3-3, so that abutment sleeve 3-1 is fixed when in use
In bone surface;Axial pass-through holes 3-4 can be penetrated from the larger bottom surface by expanding the second sophisticated 2-1 of marrow pointed cone 2, and from described
Less bottom surface passes.
Referring to Fig. 4~6, a fluting 3- suitable with intramedullary needle body 1-2 diameters is opened up in abutment sleeve 3-1 side
5, fluting 3-5 connection axial pass-through holes 3-4, so that the first sophisticated 1-1 of intramedullary needle 1 penetrates axial direction by 3-5 tiltables of slotting
In through hole 3-4, and passed from the less bottom surface;Fluting 3-5 top is located at the larger bottom surface of round platform, end distance circle
The smaller bottom surface 5mm of platform;Position fixing handle 3-2 length is 5cm;Abutment sleeve 3-1 length is 2cm, the smaller bottom surface of round platform
A diameter of 3mm, angle formed by two buses on round platform radial direction vertical section is 5 °.
Referring to Fig. 7 and 8, pin cone, which shares handle 4, includes handle main body 4-1, and handle main body 4-1 right-hand member axially offers blind
Hole 4-2;First end 1-3 and second end 2-3 can be inserted separately into blind hole 4-2;
Handle main body 4-1 is provided with locating part, for entering to the first end 1-3 or second end 2-3 that penetrate blind hole 4-2
Row is fixed;The locating part includes ball 4-4, compression spring 4-5 and slip cap 4-6;Ball 4-4, which runs through, is arranged on blind hole 4-2's
In side wall, and ball 4-4 diameter is more than the thickness of the side wall;Slip cap 4-6 axially offers the through hole run through, described logical
Hole (not marked in figure) includes the second larger through hole of the less first through hole of internal diameter and internal diameter, and first through hole slips over ball 4-4
Blind hole 4-2 periphery axially is socketed in, and is connected with blind hole 4-2 slid;Compression spring 4-5 is axially located at the second through hole
It is interior, and one end and blind hole 4-2 right-hand member offset, the right-hand member of the other end and the second through hole offsets;In the present embodiment, blind hole 4-2's
Right-hand member is axially connected with a cylinder (not marked in figure) for being provided with axial pass-through holes, and compression spring 4-5 is socketed in the cylinder
The periphery of body, to strengthen compression spring 4-5 fastness.
First end 1-3 and second end 2-3 periphery is circumferentially with the annular groove (figure to match with ball 4-4
In do not mark), annular groove completes the restriction to first end 1-3 and second end 2-3 together with ball 4-4.
In use, concrete operation step is as follows:
1st, locating aperture position:Abutment sleeve is placed in estimated aperture position, perspective cuts skin 3mm after determining, will
The sawtooth at abutment sleeve sawtooth end withstands bone surface;Perspective determine position it is good after, by expand marrow pointed cone second tip from compared with
Big bottom surface penetrates axial pass-through holes, then is passed from the smaller bottom surface and be pierced into bone, and bone is expanded by the tip of triangular pyramid
Cortex opening.
2nd, intramedullary needle is inserted and the reduction of the fracture:Withdraw from and expand marrow pointed cone, be held in position that sleeve portion is constant, by the of intramedullary needle
Fluting of one tip along abutment sleeve, which tilts, to be penetrated in axial pass-through holes, is then passed from the smaller bottom surface of round platform and is entered bone
Interior, rotary intramedullary pin makes intramedullary needle enter distal bone folded block by fracture site, rotated in marrow to adjust the direction at the first tip
Pin to adjust the direction at the first tip again, so as to complete the reduction of the fracture.
3rd, the processing of backshank:It will be cut after the backshank bending of intramedullary needle, the backshank of residual is embedded in subcutaneously, skin suture wound
Mouthful;Or cut after bending, the backshank of residual is stayed in beyond skin;Give gypsum auxiliary if necessary to fix.
Embodiment of the present utility model in order to example and description for the sake of and provide, and be not exhaustively or will
The utility model is limited to disclosed form.Many modifications and variations are aobvious and easy for the ordinary skill in the art
See.Selection and description embodiment are to more preferably illustrate principle and practical application of the present utility model, and make this area
Those of ordinary skill it will be appreciated that the utility model so as to designing the various embodiments with various modifications suitable for special-purpose.
Claims (10)
- A kind of 1. knockdown brothers' intramedullary needle embedded with minimal invasion system, it is characterised in that including:Intramedullary needle, expand marrow pointed cone and Keeper;The intramedullary needle includes intramedullary needle body, and one end of the intramedullary needle body is provided with the first tip, first tip with For the intramedullary needle body into 165 °~175 ° angles, first tip is bluff body;The marrow pointed cone that expands includes expanding marrow pointed cone body, and described one end for expanding marrow pointed cone body is sophisticated provided with second, and described second Tip is triangular pyramid;The keeper includes abutment sleeve and position fixing handle, and the abutment sleeve is the round platform provided with axial pass-through holes, described Round platform is axially perpendicular to the position fixing handle, and its larger bottom surface and one end of position fixing handle are amplexiformed, less bottom edge Provided with a circle sawtooth, second tip for expanding marrow pointed cone can penetrate axial pass-through holes from the larger bottom surface, and from it is described compared with Small bottom surface passes, and the side wall of the round platform is communicated with the fluting of the axial pass-through holes, so that the first point of the intramedullary needle End is penetrated in axial pass-through holes by the fluting tiltable, and is passed from less bottom surface.
- 2. knockdown brothers' intramedullary needle embedded with minimal invasion system according to claim 1, it is characterised in that also include being available for The pin cone that the intramedullary needle and expansion marrow pointed cone are used alternatingly shares handle, and the pin cone, which shares handle, includes handle main body, described Handle main body right-hand member axially offers blind hole;Be provided with first end in the intramedullary needle body with first relative one end in tip, it is described to expand in marrow pointed cone body with second The relative one end in tip is provided with second end, and the first end and second end can be inserted separately into the blind hole.
- 3. knockdown brothers' intramedullary needle embedded with minimal invasion system according to claim 2, it is characterised in that the handle master Locating part is additionally provided with body, the locating part includes ball, compression spring and slip cap;The ball, which runs through, to be arranged in the side wall of blind hole, and the diameter of ball is more than the thickness of the side wall;The slip cap axially offers the through hole run through, and the through hole includes the less first through hole of internal diameter and internal diameter is larger Second through hole, the first through hole slips over the periphery that ball is axially socketed in blind hole, and is connected with the slid of the blind hole;The compression spring is axially in second through hole, and one end and the right-hand member of the blind hole offset, the other end and institute The right-hand member for stating the second through hole offsets;The periphery of the first end and second end is circumferentially with the annular groove to match with ball.
- 4. knockdown brothers' intramedullary needle embedded with minimal invasion system according to claim 2, it is characterised in that first end The length of end and second end is 1.8~2.2cm.
- 5. knockdown brothers' intramedullary needle embedded with minimal invasion system according to claim 1, it is characterised in that the intramedullary needle Material be titanium alloy.
- 6. knockdown brothers' intramedullary needle embedded with minimal invasion system according to claim 1, it is characterised in that first point End is with the intramedullary needle body into 170 ° of angles;With or, it is described first tip length be 8~12mm.
- 7. knockdown brothers' intramedullary needle embedded with minimal invasion system according to claim 1, it is characterised in that first point The edge at end is provided with rounding.
- 8. knockdown brothers' intramedullary needle embedded with minimal invasion system according to claim 1, it is characterised in that the fluting Top is located at the larger bottom surface of the round platform, smaller bottom surface 4.5~5.5mm of the end apart from the round platform.
- 9. according to knockdown brothers' intramedullary needle embedded with minimal invasion system according to any one of claims 1 to 8, its feature exists In the length of the abutment sleeve is 1.8~2.2cm, a diameter of 2.8~3.2mm of the smaller bottom surface of round platform, the round platform Angle formed by two buses on radial direction vertical section is 4.5 °~5.5 °;And/or the length of the position fixing handle be 4.5~ 5.5cm。
- 10. according to knockdown brothers' intramedullary needle embedded with minimal invasion system according to any one of claims 1 to 8, its feature exists In, the cylinder that it is highly 13~17cm that the intramedullary needle body, which is, and any in a diameter of 1.6mm, 2.0mm or 2.4mm Kind;And/or the marrow pointed cone body that expands is the cylinder that height is 8~12cm, and in a diameter of 2.0mm, 2.5mm or 3.0mm It is any.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109875672A (en) * | 2019-03-26 | 2019-06-14 | 陈同林 | The minimally invasive combination of channels instrument of pelvis |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109875672A (en) * | 2019-03-26 | 2019-06-14 | 陈同林 | The minimally invasive combination of channels instrument of pelvis |
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