CN208822961U - A kind of tracer and its connection structure for bone surgery - Google Patents

Abstract

The utility model relates to the field of medical instrument technology, and in particular to a kind of connection structure for bone surgery tracer, comprising: connector (1), top form one for fixing the groove body (2) of tracer；Several ducts (3), are molded on the connector (1), and penetrate through from the top of the connector (1) to lower surface；Fixing piece (4) passes through the duct (3) and is arranged, and the lower end of the fixing piece (4) is fixed in the bony structure of patient.The utility model provides that a kind of tracer and patient's bony structure are directly fixed, and fixed form is solid and reliable, to guarantee the connection structure for bone surgery tracer of navigation accuracy.The utility model additionally provides a kind of tracer for bone surgery, including the connection structure.

Description

A kind of tracer and its connection structure for bone surgery

Technical field

The utility model relates to the field of medical instrument technology, and in particular to a kind of tracer and its company for bone surgery Binding structure.

Background technique

Spinal operation navigation usually obtains patient image in the preoperative or in art, realizes that image guides hand later to be registrated in art Art.Currently used image bootmode include two dimensional perspective guidance, CT guidance and art in conical beam CT guidance etc..Backbone hand The displacement of patient caused by any reason or bone structure variation in art are tracked in art navigation by tracer.It is usually that tracer is secured It is fixed near patients surgery bone structure, acquires under such situation image, the position that navigation system passes through tracer in corresponding art It sets to realize the image-guided surgery to surgical structure.Tracer fixing means is usually different due to modus operandi, Minimally Invasive Surgery General pass through percutaneously is fixed, and tracer is then directly clamped or be anchored on the position for closing on bone structure by open surgery.

The tracer of open surgery includes nonmetallic tracer ontology and metal clip, and the effect of tracer ontology is in hand A coordinate origin is provided for navigation system during art, and the effect of metal clip is the backbone by tracer ontology and patient It connects, forms a stable rigid connection, prevent coordinate origin movement in surgical procedure, cause surgical errors.? In use, opening the opening of a 3-4cm on patient spine first, all soft tissues are removed, expose the bone of entire backbone Property structure, then metal clip is protruded into opening, and be clipped in ridge it is prominent on, to achieve the purpose that fixed tracer ontology.Above-mentioned In structure, the opening protruded into due to needing to open a permission metal clip on the body of patient, in this way other than necessary opening, Again more openings, increase the pain and Infection probability of patient.In addition, metal clip is metal material, higher cost, processing Complex process；And metal clip can generate development when carrying out x-ray fluoroscopy, impact to the bone development of patient, can also produce Raw artifact, influences transparent effect.In addition, fixed by screw and tracer ontology above metal clip in the course of surgery , if screw precision is inadequate, or fails after being used for a long time, will result in metal clip can not take out from subjects bones, Influence the process of operation or even the rehabilitation of patient.

In order to solve the above-mentioned technical problem, Chinese patent literature CN106667578A discloses one kind and leads for spinal operation The noninvasive fixed device of boat tracer, including frame of reference, pedestal, pedestal glue line, universal connection rod, thread bush and fixing bundle Band, trapezoidal frame of reference quadrangle upper end are equipped with navigation tracer and connect ball-and-socket, L shape universal connection rod horizon bar one end and trapezoidal reference Frame is hinged, in the external screw thread ball-and-socket at the elbow ball end insertion rectangular base center of L shape universal connection rod vertical rod, forms ball-and-socket It is rotatably assorted, rectangular base baseplane is cambered surface, and middle part bottom surface is equipped with longitudinally through band groove, the both ends of rectangular base longitudinal direction Bar shaped fixing bundle band buckle is installed, bar shaped fixing bundle band is fixed in the band groove below pedestal, band groove in upper plane Firm banking glue line on the raised line on both sides constitutes the noninvasive fixed device of spinal operation navigation tracer.Firm banking Radian bottom surface is mutually agreed with human body back profile, is fixedly secured using medical adhesive and patient back body surface.Fixing bundle strip length can Any to adjust, middle section and pedestal are firmly combined, and both ends can be bound with operating bed, or lock in patient body-surface, and bar shaped is fixed Band has suction-operated, bar shaped fixing bundle band can be made to be adsorbed on patient body-surface, to reduce patient skin degree of excursion, guarantee is led Boat precision.Although not increasing patient additional wound in above scheme, band passes through suction-operated and patient body-surface Fixed, firm banking is fixed using medical adhesive and patient back body surface, is adsorbed and is pasted fixed form and insecure, performing the operation Any movement of patient or doctor or any accident may cause band in journey and the position of firm banking changes, And then lead to the position change of tracer, influence navigation accuracy.

Utility model content

Therefore, the technical problem to be solved by the present invention is to overcome tracer in the prior art and patient body-surface solid It is insecure to determine mode, position easily shifts, and then influences the defect of navigation accuracy, to provide a kind of tracer and patient bone Property structure it is directly fixed, fixed form is solid and reliable, to guarantee tracer for bone surgery and its connection of navigation accuracy Structure.

In order to solve the above-mentioned technical problem, the utility model provides a kind of connection knot for bone surgery tracer Structure, comprising:

Connector, top form one for fixing the groove body of tracer；

Several ducts are molded on the connector, and are penetrated through from the top of the connector to lower surface；

Fixing piece passes through the duct and is arranged, and the lower end of the fixing piece is fixed in the bony structure of patient.

The connection structure for bone surgery tracer, the axis of the axis in the duct and the connector it Between angle be acute angle, and the lower end of the fixing piece for passing through the duct intersects at a fixed point.

The connection structure for bone surgery tracer, lower surface 1.5- of the fixed point apart from the connector 2.5cm。

The connection structure for bone surgery tracer, on the sectional elevation of the connector, several institutes Pore distribution is stated in the two sides of the axis of the connector, and positioned at several described ducts of the same side and the connector The angle of axis is sequentially increased.

The connection structure for bone surgery tracer, on the top, opposite with the duct of the connector The position answered also forms guide shaft fixing unit, and the fixing piece is fixed on after sequentially passing through the guide shaft fixing unit and the duct In the bony structure of patient.

The connection structure for bone surgery tracer, the guide shaft fixing unit and connector one at Type, and internal is hollow form.

The connection structure for bone surgery tracer, the outer diameter of the guide shaft fixing unit are 4.0-5.0mm, institute The internal diameter for stating guide shaft fixing unit and the duct is 1.5-2.0mm.

The connection structure for bone surgery tracer also forms one tiltedly in the lower surface of the connector Face, the inclined-plane pass through the axis of the connector.

The connection structure for bone surgery tracer, the connector are photosensitive resin and peek resinous wood Matter, the fixing piece are Kirschner wire.

The utility model additionally provides a kind of tracer for bone surgery, including the connection structure.

Technical solutions of the utility model have the advantages that

1. the connection structure provided by the utility model for bone surgery tracer, including connector, top form One for fixing the groove body of tracer；Several ducts are molded on the connector, and are penetrated through from the top of the connector To lower surface；Fixing piece passes through the duct and is arranged, and the lower end of the fixing piece is fixed in the bony structure of patient.It is first It is first that tracer is directly fixed by groove body molding at the top of connector and connector, it fixes, mounting means is simple, reliable；So Afterwards by fixing piece pass through connector on molding duct be directly anchored in the bony structure of patient, thus realize tracer with The secured connection of the bony structure of patient, being fixed with skin adsorption and pasting compared with the existing technology, the utility model and bone Property structure directly fixation it is then stronger, it is therefore prevented that the offset of tracer position caused by various fortuitous events, so guarantee Navigation accuracy.

2. the connection structure provided by the utility model for bone surgery tracer, the axis in the duct and the company Angle between the axis of fitting is acute angle, and the lower end for passing through the fixing piece in the duct intersects at a fixed point.It is several A fixing piece intersects at a point after passing through the duct on connector, this is because fixing piece needs the ability after the skin of patient It is fixed with bony structure, and skin has certain elasticity and shrinkage, the inclined of position easily occurs under such environment for fixing piece It moves, the lower end of several fixing pieces of the utility model intersects at a point, mutually provides support force, form and keep in check, prevent The a small amount of offset for the fixing piece position that the shrinkage of skin may cause.

3. the connection structure provided by the utility model for bone surgery tracer, the fixed point is apart from the connector Lower surface 1.5-2.5cm.The purpose for the arrangement is that in order to adapt to the variation of patient's weight, when patient's weight is lighter, due to Subcutaneous fat is few, can choose fixed position at the lower surface 1.5cm of connector；When patient's weight is heavier, due to subcutaneous Fat is more, and fat deposit is thicker, in order to which fixing piece to be firmly secured in the bony structure of patient, needs that fixed position is selected to exist At the lower surface 2.5cm of connector.

4. the connection structure provided by the utility model for bone surgery tracer, in the sectional elevation of the connector On, several described pore distributions in the two sides of the axis of the connector, and be located at the same side several described ducts with The angle of the axis of the connector is sequentially increased.The purpose for the arrangement is that several fixing pieces is made to be distributed in connector as far as possible Different location, thus the fixation that the bony structure of connector and patient is stronger.

5. the connection structure provided by the utility model for bone surgery tracer, the outer diameter of the guide shaft fixing unit are The internal diameter in 4.0-5.0mm, the guide shaft fixing unit and the duct is 1.5-2.0mm.The selection of duct internal diameter is based on trouble Person bony structure number determine, should guarantee firm fixation, guarantee that it is minimum to reach the damage of patient again；Guiding is fixed The selection of part outer diameter is to avoid the displacement in duct based on the smallest outer prominent structure and most stable of fixation.

6. the connection structure provided by the utility model for bone surgery tracer, the lower surface of the connector also An inclined-plane is formed, the inclined-plane passes through the axis of the connector.This is the demand in order to adapt to patient's difference operative site, When operative site is in lower lumbar spine, since body curve's radian is excessive, the lower surface of connector is if complete planar design, then Can not be accurately bonded with patient skin, so influence with the fixation of bony structure, and the utility model is by the lower surface of connector A part be designed as inclined-plane, then the generation of the above problem is avoided, so that the lower surface of connector is accurately pasted with patient skin It closes.

7. the tracer provided by the utility model for bone surgery can be incited somebody to action by connector and several fixing pieces The bony structure of tracer and patient are fixedly secured, and fixed form is simple, reliable, applied widely.

Detailed description of the invention

It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art Under the premise of labour, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the schematic diagram one of the connection structure provided by the utility model for bone surgery tracer；

Fig. 2 is the schematic diagram two of the connection structure provided by the utility model for bone surgery tracer；

Fig. 3 is the top view of Fig. 1；

Fig. 4 is the cross-sectional view of Fig. 1.

Description of symbols:

1- connector；2- groove body；The duct 3-；4- fixing piece；The inclined-plane 5-；6- guide shaft fixing unit；21- limiting section.

Specific embodiment

The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical Novel protected range.

In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other Not constituting conflict can be combined with each other.

A kind of specific embodiment of connection structure for bone surgery tracer as shown in Figs 1-4, including top The connector 1 of a groove body 2 for fixing tracer is formed, forms several ducts 3 on the connector 1, and described Duct 3 is penetrated through from the top of the connector 1 to lower surface, and is passed through the duct 3 and be arranged, and lower end is fixed on the bone of patient Fixing piece 4 in property structure.

Connector 1 is cylindrical body in the present embodiment, and convenient for storage and disinfection, material is photosensitive resin and peek resin, tool There is characteristic that is safe and nontoxic, using without sensibiligen, repeatable disinfection, while these two types of resins can also be used in 3D printing, Ke Yigen The connector 1 of printing and making different shape and size quick according to the concrete condition of patient, independent.Groove body 2 is molded over connector 1 Center of top can be the cross to match with the mounting blocks of tracer bottom in the present embodiment to be rectangular or round etc., ten The edge of a line of font also forms the limiting section 21 for limit, and 2 size of groove body is with the mounting blocks with tracer bottom Forming interference fit is advisable, to guarantee the fastness of installation；The mounting blocks of tracer need to be only aligned with groove body 2 when installation, to It is lower firmly to press.An inclined-plane 5 is also formed in the lower surface of the connector 1, the inclined-plane 5 passes through the connector 1 Axis.Inclined-plane 5 is removed a part by the bottom of connector 1 and is formed, i.e., is oliquely downward cut along the side wall of connector 1 It cuts, cut surface intersects with the axis of connector 1, and the area of excision and inclination angle can determine according to actual needs, different size Connector 1 be suitable for patient different operative sites.

As a kind of specific embodiment, several ducts 3 are respectively from the top of connector 1 and side upper end to downward It stretches to from bottom and is pierced by.Duct 3 is molded over any position of the top of connector 1 in addition to groove body 2, preferably, several A duct 3 is arranged in a manner of catercorner at the top of connector 1, and has at least in the side of connector 1 also corresponding shaping One duct 3.In the connector 1 by its cornerwise sectional elevation, several described ducts 3 are symmetrically distributed in institute State the two sides of the axis of connector 1, the angle between the axis in the duct 3 and the axis of the connector 1 is acute angle, and position It is sequentially increased in several described ducts 3 of the same side and the angle of the axis of the connector 1, i.e., in same sectional elevation Interior, several ducts 3 are located at different positions, are gradually distance from from the axis direction close to connector 1, so that several are solid Determine the different location that part 4 passes through connector 1 to the full extent, guarantees the fastness that connector 1 is connected with patient's bony structure. As shown in figure 4, the lower end for passing through the fixing piece 4 in the duct 3 intersects at a fixed point, the fixed point is apart from the connector 1 lower surface 1.5-2.5cm.All fixing pieces 4 intersect in the same point of patient's bony structure, are formed keep in check between each other, A small amount of displacement will not occur due to the retractility of skin itself, fixation is relatively reliable.

Guide shaft fixing unit 6 is also formed in top, the position corresponding with the import in the duct 3 of the connector 1, Guide shaft fixing unit 6 extends the setting of connector 1, and development length can be arranged according to demand, can be integrally formed with connector 1, And internal is hollow form, to allow fixing piece 4 to pass through；The fixing piece 4 sequentially passes through the guide shaft fixing unit 6 and the duct It is fixed on after 3 in the bony structure of patient.Specifically, the outer diameter of the guide shaft fixing unit 6 is 4.0-5.0mm, the fixed guide The internal diameter for determining part 6 and the duct 3 is 1.5-2.0mm.Guide shaft fixing unit 6 not only plays guiding to the installation of fixing piece 4 and makees With can also be played a certain protective role to duct 3.In the present embodiment, the fixing piece 4 is Kirschner wire.

A kind of tracer for bone surgery further includes tracer ontology and support frame including the connection structure, Support frame quadrangle upper end is equipped with tracer ontology and connects ball-and-socket, and tracer ontology is connected and fixed by connection ball-and-socket with support frame； Support frame inner opposite angle fixes X-shaped supporting rib, and X-shaped supporting rib cross part central lower forms mounting portion, and support frame passes through installation The groove body of portion and connection structure is fixed, and then realizes being reliably fixed for tracer ontology and patient's bony structure, be ensure that and is led The precision of boat.

When being performed the operation using tracer, first have to by the connection ball-and-socket on support frame connect tracer ontology with it Fixation is connect, is then connected and fixed support frame by the mounting portion of bottom and the groove body of connector, then the connection knot that will be connected Structure is placed near the bony structure that patient needs to perform the operation, and Kirschner wire is finally inserted into the duct of connector by guide shaft fixing unit In, and be finally fixed in the bony structure of patient.

The connection structure of the utility model can be used for spinal operation, can be used for other bone surgeries.

Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or It changes among the protection scope created still in the utility model.

Claims (10)

1. a kind of connection structure for bone surgery tracer characterized by comprising

Connector (1), top form one for fixing the groove body (2) of tracer；

Several ducts (3), are molded on the connector (1), and penetrate through from the top of the connector (1) to lower surface；

Fixing piece (4) passes through the duct (3) and is arranged, and the lower end of the fixing piece (4) is fixed on the bony structure of patient On.

2. the connection structure according to claim 1 for bone surgery tracer, which is characterized in that the duct (3) Axis and the connector (1) axis between angle be acute angle, and pass through the duct (3) the fixing piece (4) Lower end intersect at a fixed point.

3. the connection structure according to claim 2 for bone surgery tracer, which is characterized in that the fixed point distance The lower surface 1.5-2.5cm of the connector (1).

4. the connection structure according to claim 1 for bone surgery tracer, which is characterized in that in the connector (1) on sectional elevation, several described ducts (3) are distributed in the two sides of the axis of the connector (1), and are located at the same side Several described ducts (3) and the angle of the axis of the connector (1) be sequentially increased.

5. the connection structure according to claim 1 for bone surgery tracer, which is characterized in that in the connector (1) top, position corresponding with the duct (3) also forms guide shaft fixing unit (6), and the fixing piece (4) is successively worn It is fixed in the bony structure of patient after crossing the guide shaft fixing unit (6) and the duct (3).

6. the connection structure according to claim 5 for bone surgery tracer, which is characterized in that the guiding is fixed Part (6) and the connector (1) are integrally formed, and internal is hollow form.

7. the connection structure according to claim 6 for bone surgery tracer, which is characterized in that the guiding is fixed The outer diameter of part (6) is 4.0-5.0mm, and the internal diameter of the guide shaft fixing unit (6) and the duct (3) is 1.5-2.0mm.

8. the connection structure according to claim 1 for bone surgery tracer, which is characterized in that in the connector (1) lower surface also forms an inclined-plane (5), and the inclined-plane (5) passes through the axis of the connector (1).

9. the connection structure according to claim 1 for bone surgery tracer, which is characterized in that the connector It (1) is photosensitive resin and peek resin material, the fixing piece (4) is Kirschner wire.

10. a kind of tracer for bone surgery, which is characterized in that including the described in any item connection knots of claim 1-9 Structure.