Summary of the invention
For the prior art there are one or more of problem, the present invention provides a kind of operation traction sting device,Include:
Retractor, including main body, operating side and intrusion end；
Sheath, the sheath pipe sleeve cooperate in retractor body exterior with retractor, the operating side of the retractor and intrusionEnd is exposed to the outside of sheath；
The retractor can axially move with sheath.
Preferred embodiment according to an aspect of the present invention, the body cross-section of the retractor are circle, the intrusionEnd is smooth cone.
Preferred embodiment according to an aspect of the present invention, the retractor main body and intrusion end are integrally formed.
Preferred embodiment according to an aspect of the present invention, the long 0.8-1.5cm in intrusion end of the retractor.
Retractor main body described in preferred embodiment according to an aspect of the present invention uses engraved structure.Preferably, describedEngraved structure accounts for the 5%-40% of retractor main part.
Preferred embodiment according to an aspect of the present invention, the sheath include intrusion end, endpiece and operating side, the tailFor section close to the operating side, the operating side is set to the edge of the endpiece.
Preferred embodiment according to an aspect of the present invention, the fit system between the sheath and retractor is: from leadingIt is in the progressive formation by clearance fit to interference fit that the operating side for opening device, which invades end along main body to the retractor of retractor,.
Preferred embodiment according to an aspect of the present invention, the retractor invade end and are pierced by from the opening at sheath intrusion endAnd block the opening at sheath intrusion end.
The outer surface of preferred embodiment according to an aspect of the present invention, sheath intrusion end is gradually in the conical surface, is retractedThe cone cell outer surface of cone cell outer surface and sheath intrusion end that device invades end, which is formed, to be seamlessly transitted.
The internal diameter of preferred embodiment according to an aspect of the present invention, the sheath endpiece is gradually outwardly open, it is preferable thatThe sheath endpiece is in the shape of a trumpet.
Preferred embodiment according to an aspect of the present invention, the sheath and the retractor can using locking member formationDismantling connection, the locking member is for the sheath to be fixed on outside the retractor main body.
Preferred embodiment according to an aspect of the present invention, the locking member include bulge-structure and position limiting structure, instituteBulge-structure is stated for fixing sheath intrusion end, the position limiting structure is for limiting sheath operating side.
Preferred embodiment according to an aspect of the present invention, the position limiting structure are to be set to retractor main body and retractorReinforcing rib between operating side is provided with the structure with the cooperation of sheath operating side, in surgical procedure on the reinforcing ribWhen limitation sheath moved along axial direction to retractor operating side.
Preferred embodiment according to an aspect of the present invention, the bulge-structure are set in the retractor main body and approachRetractor invades the position at end, invades end inner surface tight fit with the sheath.
Preferred embodiment according to an aspect of the present invention, the retractor is equipped with guide hole and locking device, described to drawGuide hole is for being inserted into guide device, and the locking device is for fixed be inserted into guide device.
Preferred embodiment according to an aspect of the present invention, the guide hole extend to retractor by retractor operating side and invadeIt is internal to enter end.
Preferred embodiment according to an aspect of the present invention, the locking device are set on retractor operating side.
Preferred embodiment according to an aspect of the present invention, the locking device include along guide hole radially deeply to guidanceThe bolt in hole and the screw cooperated with bolt.
Preferred embodiment according to an aspect of the present invention, the retractor and/or sheath pipe surface are equipped with scale.
Preferred embodiment according to an aspect of the present invention, the sheath are transparent two kinds with inner face frosted.
Preferred embodiment according to an aspect of the present invention, the retractor are made selected from biocompatible materials；It is describedSheath is made selected from biocompatible materials.Biocompatible materials used in the retractor and/or sheath meet medical wantIt asks.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the inventionIt applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Figure 1A is the vertical profile oblique view for the embodiment that cerebral operations of the invention retract sting device with brain tissue；
Figure 1B is the oblique view for the embodiment that cerebral operations of the invention retract sting device with brain tissue；
Fig. 2A -2D is the structural schematic diagram of retractor 10 in Figure 1A, wherein Fig. 2 B is front view, and Fig. 2 D is a left side of Fig. 2 BView, Fig. 2A and Fig. 2 C are perspective views；
Fig. 3 A-3D is the structural schematic diagram of sheath 20 in Figure 1A, wherein Fig. 3 B is front view, and Fig. 3 D is the left view of Fig. 3 BFigure, Fig. 3 A is perspective view, and Fig. 3 C is axial section；
Description of symbols in figure: 10-- retractor, the intrusion of 11-- retractor end, 18-- retractor main body, 12-- engraved structure,13-- retractor operating side, 14-- retractor scale, the aperture of the operating side 15--, 16-- bulge-structure, 17-- position limiting structure, 20--Sheath, 21-- sheath intrusion end, 22-- sheath endpiece, 23-- sheath operating side, 24-- sheath scale, 25-- sheath pipe through-hole,30-- locking device.
Specific embodiment
Hereinafter, certain exemplary embodiments are simply just described.As one skilled in the art will recognize thatLike that, without departing from the spirit or scope of the present invention, described embodiment can be modified by various different modes.Therefore, attached drawing and description are considered essentially illustrative rather than restrictive.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " widthDegree ", " thickness ", " go up ", " under ", " preceding ", " afterwards ", " left side ", " right side ", " heavily fortified point, and directly ", " level ", " top ", " bottom ", " is interior ", " outside ", "Clockwise ", " counterclockwise " wait the orientation or positional relationship of instructions to be based on the orientation or positional relationship shown in the drawings, merely toConvenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second " are onlyFor descriptive purposes, it is not understood to indicate or imply relative importance or implicitly indicates the number of indicated technical characteristicAmount." first " is defined as a result, the feature of " second " can explicitly or implicitly include one or more spySign.In the description of the present invention, " multiple " are meant that two or more, unless otherwise specifically defined.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phaseEven ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected: canTo be mechanical connection, it is also possible to be electrically connected or can mutually communicate；It can be directly connected, it can also be by between intermediaryIt connects connected, can be the connection inside two elements or the interaction relationship of two elements.For the ordinary skill of this fieldFor personnel, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature its " upper " or it " under "It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through itBetween other characterisation contact.Moreover, fisrt feature second feature " on ", " top " and " above " include first spySign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature existsSecond feature " under ", " lower section " and it is " following " including fisrt feature right above second feature and oblique upper, or be merely representative ofFirst feature horizontal height is less than second feature.
Following disclosure provides many different embodiments or example is used to realize different structure of the invention.In order toSimplify disclosure of the invention, hereinafter the component of specific examples and setting are described.Certainly, they are merely examples, andAnd it is not intended to limit the present invention.In addition, the present invention can in different examples repeat reference numerals and/or reference letter,This repetition is for purposes of simplicity and clarity, itself not indicate between discussed various embodiments and/or settingRelationship.In addition, the present invention provides various specific techniques and material example, but those of ordinary skill in the art can be withRecognize the application of other techniques and/or the use of other materials.
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described hereinApply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Embodiment shows a kind of operations with sting device is retracted, and is used for brain surgery.As shown in Figure 1A, Figure 1B, this realityApplying the example operation traction sting device includes retractor 10, sheath 20.The retractor 10 is nested in the sheath 20,The retractor 10 can axially move with sheath 20.
As shown in Fig. 2A, Fig. 2 B, Fig. 2 C, Fig. 2 D, the retractor 10 includes operating side 13, intrusion end 11 and between the twoMain body 18.20 sets of the sheath cooperates with retractor, the operating side 13 of the retractor and invades outside retractor main body 18Enter the outside that end 11 is exposed to sheath.18 cross section of main body of the retractor 10 is circle, and the intrusion end 11 is smoothCone.The retractor main body 18 is integrally formed with intrusion end 11.0.8-1.5cm long, the example in intrusion end 11 of the retractorSuch as: 0.8cm, 0.9cm, 1cm, 1.1cm, 1.2cm, 1.3cm, 1.4cm, 1.5cm, etc..
As shown in Fig. 3 A, Fig. 3 B, Fig. 3 C, Fig. 3 D, the sheath 20 includes intrusion end 21, endpiece 22 and operating side 23, instituteEndpiece 22 is stated close to the operating side 23, the operating side 23 is set to the edge of the endpiece 22.Retractor invade end 11 fromThe opening at sheath intrusion end 21 is pierced by and blocks the opening at sheath intrusion end 21.
When work, 20 sets of sheath outside retractor 10, make retractor intrusion end 11 stretch out sheath 20, the sheath that will be assembledPipe 20 and retractor 10 are invaded from suitable position, until sheath intrusion end 21 arrival target area, are at this time removed retractor 10Out, sheath 20 remains stationary, and forms an operation path.Cerebral operations in use, 20 sets of sheath outside retractor 10 such asShown in Figure 1B, by the combination unit from the brain tissue of the operative incision of patients head insertion patient, invaded by conical retractorEnd 11 retracts brain tissue, and after reaching target position, fixed sheath 20 takes out retractor 10, and the end 21 of sheath intrusion at this time is openIt is directed at lesions position, can be performed the operation by 25 access instruments of sheath pipe through-hole.10 main body of retractor uses cylindrical structure, makesStress is retracted in approach operating process to be uniformly distributed, nerve conduction beam is damaged to reduce, and is reduced cerebral operations operation and is drawnPlay the risk of sequelae.
Embodiment more preferably, in order to make surgical instrument obtain biggish activity space in sheath, such as Figure 1A, figure3C, the fit system between the sheath and retractor is: main body to the retractor from the operating side of retractor along retractor is invadedEnter end in the progressive formation by clearance fit to interference fit.Retractor invades the cone cell outer surface at end 11 and sheath invades end 21Coniform outer surface smoother transition, to avoid in structure fracture cutting brain tissue formed secondary injury.The sheath endpiece22 is gradually outwardly open, in the shape of a trumpet.As shown in Figure 1A, Fig. 2A -2D, the retractor main body uses engraved structure 12.InstituteState the 5%-40% that engraved structure accounts for retractor body peripheral face product.The design of engraved structure is primarily to mitigate weight and satisfactionThe demand of moulding process.Elastic appropriateness is answered in the cooperation of sheath 20 and retractor 10, on the one hand guarantees that the two will not in progradationIt disengages, excessive resistance will not be generated when another aspect retractor is withdrawn from；From the operating side of retractor along retractor main body toIt is in the gradual change by clearance fit to interference fit that retractor, which invades end,.The cooperation of sheath 20 and retractor 10 is the key point of technologyOne of, it is excessive that cooperation tightly will lead to very much resistance when retractor is withdrawn from from sheath；The seam loosely cooperated between retractor and sheathGap is possible to cause to cut to tissue in approach operating process.
Embodiment more preferably, as shown in Figure 2 A, the sheath and the retractor can using locking member formationDismantling connection, the locking member is for the sheath to be fixed on outside the retractor main body.The locking member includes convexStructure 16 and position limiting structure 17 are played, the bulge-structure is for fixing sheath intrusion end, and the position limiting structure is for limiting sheathOperating side.The position limiting structure 17 is the reinforcing rib being set between retractor main body 18 and retractor operating side 13, describedThe structure with the cooperation of sheath operating side is provided on reinforcing rib, make be in from radially and circumferentially between sheath 20 and retractor 10Stationary state.The bulge-structure 16 is set in the retractor main body close to the position at retractor intrusion end, is invaded with sheathEnter to hold inner surface tight fit.
Embodiment more preferably, as shown in Figure 1A, the retractor 10 are equipped with guide hole 15 and locking device 30, instituteGuide hole 15 is stated for being inserted into guide device, the locking device 30 is for fixed be inserted into guide device.The guide hole15 are extended to inside retractor intrusion end 11 by retractor operating side 13.The locking device 30 is set to retractor operating side 13On.The locking device includes along guide hole radially deeply to the bolt of guide hole and the screw cooperated with bolt.Guide hole 15With the setting of locking device 30, makes to retract operation while guide device can be cooperated to complete.
Embodiment more preferably, as shown in Fig. 2A -2D, Fig. 3 A-3D, during approach, the depth of retractor insertionIt is determined by tip location, operation requires sheath tube opening to cope with quasi- lesions position, in order to accurately know two location informations, more preferablyDesign be that retractor 10 and 20 surface of sheath have graduation indication, convenient for medical worker obtain depth information, as retractor carveShown in degree 14 and sheath scale 24.The sheath 20 is transparent two kinds with inner face frosted.The retractor 10 is selected from biologyThe material that compatibility meets medical requirement is made；The sheath 20 is made selected from the material that biocompatibility meets medical requirement.The material of sheath 20 is not squeezed and deformed vulnerable to brain tissue；In order to reduce intrusion resistance, contact tissue outer surface answer it is smooth.
Operation provided by the invention is used cylindrical structure, is made in approach operating process with sting device, retractor is retractedIt retracts stress to be uniformly distributed, nerve conduction beam is damaged to reduce, reduce the risk that cerebral operations operation causes sequelae.Sheath operating side horn mouth provides biggish surgical instrument operation space；The operation path stabilization that sheath provides is unlikely to deform；SheathPipe scale can facilitate medical worker to understand insertion depth.Sting device is retracted by using the present invention, may be implemented in clinicWhen doctor carries out cerebral operations operation, low-wound is carried out to patient's brain tissue and retracts puncture procedure, reduces operative approach operation pairThe damage of patient's brain tissue reduces postoperative complication, while can provide biggish surgical procedure space for doctor again.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be usedTo modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the inventionWithin protection scope.