CN209629672U - Needle fixture and automatic blood sampling machine - Google Patents

Abstract

The utility model is suitable for medical instruments field, provides a kind of needle fixture and automatic blood sampling machine.Wherein, needle fixture is used for fixed needle, the syringe needle includes shank, needle stand and needle handle, the needle fixture includes the mounting table for tentatively fixing the needle handle and the clamping component for clamping the needle stand after the needle handle is tentatively fixed on the mounting table, the clamping component includes symmetrically arranged left clamp, right clamping plate and for driving the left clamp and the right clamping plate to move toward one another and clamping the driver of the needle stand to intermediate mobile, the right surface of the left clamp offers the left arc groove being recessed to the left, the left surface of the right clamping plate offers the right arc groove being recessed to the right, the section of the left arc groove and the right arc groove is single curvature and curvature is identical and arc core is located at the camber line of same level height.The needle fixture can effectively improve the accuracy of syringe needle axial centerline when syringe needle is fixedly clamped.

Description

Needle fixture and automatic blood sampling machine

Technical field

The utility model belongs to medical instruments field more particularly to needle fixture and automatic blood sampling machine.

Background technique

The effective object of needle fixture is the medical needle of blood sampling, and syringe needle includes sequentially connected shank, needle stand And needle handle, needle handle are connected with connecting tube, shank insertion test tube is to make connecting tube be connected to test tube.In some cases, it is desirable that Shank is fixed on specific position, so that the smooth grafting of test tube and shank is realized, in that case, to the fixed position of shank Accuracy have higher requirement.Existing needle fixture uses simple fixing seat, opens up accommodating needle handle in fixing seat Card slot, needle handle is put into card slot, realizes and fixes.Under which, there are factors to influence the final fixation position of shank, such as Card slot fabrication error itself, operator are put into the depth offset of card slot, needle handle itself manufactured size deviation etc..Therefore, existing Design is difficult to ensure the accuracy of shank position.And existing fixing seat is difficult to provide enough clamping forces to ensure that shank is inserted into Syringe needle will not be mobile relative to fixed seat when test tube.

Utility model content

The purpose of the utility model is to overcome above-mentioned the deficiencies in the prior art, provide a kind of needle fixture and from Dynamic blood sampling machine, is intended to improve the accuracy of shank position.

The utility model provides a kind of needle fixture, is used for fixed needle, the syringe needle includes sequentially connected needle Bar, needle stand and needle handle, the needle stand are the cylindrical shape that front and back extends and for fixing the shank, and the needle handle is for operator Member, which catches, to be taken, and the needle fixture includes:

Mounting table, for fixing the needle handle；

Clamping component, for clamping the needle stand, the clamping component packet after the needle handle is fixed on the mounting table Include symmetrically arranged left splint, right splint and for driving the left clamp and the right clamping plate to move toward one another and move to centre The dynamic driver to clamp the needle stand, the right surface of the left clamp offers the left arc groove being recessed to the left, the right folder The left surface of plate offers the right arc groove being recessed to the right, and the section of the left arc groove and the right arc groove is single song Rate and curvature is identical and arc core is located at the camber line of same level height.

Further, the clamping component further include left and right extend sliding rail, respectively with the sliding rail slip left slider, Right sliding block, the left clamp are fixedly connected with the left slider, and the right clamping plate is connect with the right Boards wall；

The clamping component further includes left screw rod and right screw rod, and the left slider is socketed on the left screw rod, the right side Sliding block is socketed on the right screw rod, and the driver drives the left screw rod and the right screw rod rotation, to make the left side Sliding block and the right sliding block are mobile to centre simultaneously.

Further, the left screw rod outer surface is equipped with left-hand thread, and the right screw rod outer surface is equipped with and the left-hand thread The opposite right-hand thread in direction of rotation, the left screw rod and the right screw rod are wholely set.

Further, the supporting plate and limit base that the mounting table includes bottom plate, is fixed on the bottom plate and front and back is arranged, The needle handle is fastened between the supporting plate and the limit base, and the supporting plate limits the needle handle and moves forward, the limit Seat limits the needle handle and moves backward.

Further, surface offers downwards the limiting slot for extending forward, the supporting plate to the limit base on it Surface offers downwards the accommodation groove that front and back penetrates through on it, and the needle stand abuts the accommodation groove slot bottom needle handle card simultaneously It is located at after the limiting slot between cell wall and the supporting plate rear surface.

Further, the accommodation groove slot bottom is arc surface, and its radius of curvature is than the radius of curvature of the left arc groove Greatly.

Further, the needle fixture further includes trigger control, and the trigger control is fixed on the mounting table On, when the syringe needle is placed on the mounting table, the trigger control is triggered, the driver drives the left clamp and institute It states right clamping plate and clamps the syringe needle.

Further, the trigger control is fixed on the limiting slot slot bottom.

Further, the left clamp includes left plate main body and is connected to the right surface of the left plate main body and extends to the right Left clamping element, the left arc groove are provided on the left clamping element；The right clamping plate includes right panel main body and is connected to described Right panel main body left surface and the right clamping element extended to the left, the right arc groove are provided on the right clamping element, the left folder Tight part and the right clamping element are that elastic material is made.

The utility model also provides a kind of automatic blood sampling machine, including such as above-mentioned needle fixture.

Needle fixture provided by the utility model is by the design of left arc groove and right arc groove and in conjunction with left clamp Mobile to centre simultaneously with right clamping plate, needle stand is fixed between left arc groove and right arc groove and the central axis of shank and left Arc groove arc core and right arc groove arc core line intersect at the midpoint of left arc groove arc core and right arc groove arc core line, thus really Dimensional discrepancy, personnel's placement deviation etc. for protecting needle stand do not influence the position of the central axis of shank, fix to improve syringe needle The accuracy of position.

Detailed description of the invention

In order to illustrate more clearly of the technical scheme in the embodiment of the utility model, will make below to required in embodiment Attached drawing is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention, For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings Other attached drawings.

Fig. 1 is the structural schematic diagram of existing syringe needle；

Fig. 2 is the needle fixture of the utility model embodiment one and the connection schematic diagram of syringe needle；

Fig. 3 is the front view of Fig. 2；

Fig. 4 is the perspective view of the needle fixture of the utility model embodiment one；

Fig. 5 is the part disassembly diagram of the needle fixture of the utility model embodiment one；

Fig. 6 is the mounting table of the utility model embodiment one and the connection schematic diagram of trigger control；

Fig. 7 is the left clamp of the utility model embodiment one and the connection schematic diagram of right clamping plate and syringe needle.

Drawing reference numeral explanation:

Specific embodiment

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this Utility model is not used to limit the utility model.

It should be noted that it can be directly another when element is referred to as " being fixed on " or " being set to " another element On one element or indirectly on another element.When an element is known as " being connected to " another element, it can To be directly to another element or be indirectly connected on another element.

In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include one or more of the features.The meaning of " plurality " is two or two in the description of the present invention, More than, unless otherwise specifically defined.

It should also be noted that, being defined in the utility model embodiment according to the XYZ rectangular coordinate system established in Fig. 1: It is defined as front positioned at the side of X-axis positive direction, the side positioned at X-axis negative direction is defined as rear；Positioned at the one of Y-axis positive direction Side is defined as left, and the side positioned at Y-axis negative direction is defined as right；It is defined as top positioned at the side of Z axis positive direction, is located at The side of Z axis negative direction is defined as lower section.

It is only phase each other it should also be noted that, the positional terms such as left and right, upper and lower in the utility model embodiment It is reference to concept or with the normal operating condition of product, and should not be regarded as restrictive.

Embodiment one

The present embodiment provides a kind of needle fixtures, are used for fixed needle.

Fig. 1 is please referred to, syringe needle 100 includes that front and back is sequentially connected with shank 110, needle stand 120 and needle handle 130, and needle stand 120 is used for Fixed shank 110, needle stand 120 are the cylindrical shape that front and back extends, and needle handle 130 facilitates operator to grasp as the position taken is caught Make, shank 110, needle stand 120 and needle handle 130 have the same central axis extended along the longitudinal direction, needle handle 130 and connecting tube 140 connections, shank 110 are inserted into test tube (not shown) to make connecting tube 140 connect with test tube.

Referring to figure 2. to Fig. 7, which includes mounting table 200 and clamping component 300.

Mounting table 200 is for fixing needle handle 130, and clamping component 300 after needle handle 130 is fixed on mounting table 200 for pressing from both sides Tight needle stand 120.Clamping component 300 is including symmetrically arranged left clamp 310, right clamping plate 320 and for driving 310 and of left clamp Right clamping plate 320 moves toward one another and to the intermediate mobile driver 330 to clamp needle stand 120, and the right surface of left clamp 310 offers The left arc groove 311 being recessed to the left, the left surface of right clamping plate 320 offer the right arc groove 321 being recessed to the right, left arc groove 311 be single curvature with right 321 section of arc groove and curvature is identical and arc core is located at the camber line of same level height.

Referring to figure 3., by the setting moved while left clamp 310 and right clamping plate 320 to centre, in conjunction with left arc groove 311 and right arc groove 321 design, needle stand 120 is fixed between left arc groove 311 and right arc groove 321 and syringe needle 100 The line of central axis and 321 arc core of left 311 arc core of arc groove and right arc groove intersects at left 311 arc core of arc groove and right arc The midpoint (G point) of the line of 321 arc core of slot, so that it is guaranteed that the dimensional discrepancy of needle stand 120 or other extraneous factors do not influence syringe needle It is fixed to improve syringe needle 100 for the position that 100 central axis intersects with left 311 arc core of arc groove and 321 arc core line of right arc groove The accuracy of position.Meanwhile left clamp 310 and right clamping plate 320 are clamped needle stand 120 in electromechanical form, provide enough Clamping force with ensure shank 110 be inserted into test tube when syringe needle 100 will not generate displacement.

It will be understood by those in the art that the function in order to realize clamping, when the song of left arc groove 311 and right arc groove 321 When rate radius is greater than the radius of needle stand 120, the arc core of left arc groove 311 and right arc groove 321 is except arc area, and arc Line is shorter than the semicircle length of same curvature.When the radius of curvature of left arc groove 311 and right arc groove 321 is less than the half of needle stand 120 When diameter, do not limited by this.In this illustrated embodiment, the radius of curvature of left arc groove 311 and right arc groove 321 is greater than needle stand 120 Radius, the arc core of left arc groove 311 and right arc groove 321 is except arc area, and camber line is shorter than the half of same curvature Circle length.

Preferably, Fig. 7 is please referred to, left clamp 310 includes left plate main body 313 and is connected to the right surface of left plate main body 313 simultaneously The left clamping element 312 extended to the right, left arc groove 311 are provided on left clamping element 312；Right clamping plate 320 includes right panel main body 323 With the right clamping element 322 for being connected to 323 left surface of right panel main body and extending to the left, right arc groove 321 is provided with right clamping element 322 On, left clamping element 312 and right clamping element 322 are that elastic material is made.The design allows in existing syringe needle 100, needle Seat 120 is mostly cylindrical shape, and due to brand and manufacturer's difference, part needle stand 120 is additionally provided with annular projection, Zuo Jia in peripheral surface Tight part 312 and right clamping element 322 are that the setting of elastic material can avoid when syringe needle 100 is fixed in the different designs of needle stand 120 wherein The influence of mandrel line position.

In the present embodiment, left plate main body 313 and right panel main body 323 are made of metal material, preferably aluminium.Left clamping element 312 and right clamping element 322 be preferably rubber material be made.

Include bottom plate 210, be fixed on the supporting plate that simultaneously front and back is arranged on bottom plate 210 with Fig. 6, mounting table 200 referring to figure 4. 220 and limit base 230, needle handle 130 be fastened between supporting plate 220 and limit base 230, supporting plate 220 limits needle handle 130 to Forward Dynamic, limit base 230 limits needle handle 130 and moves backward.Supporting plate 220 and the separately positioned of limit base 230 operate convenient for operator, Operator's hand catches needle handle 130, and the preliminary of syringe needle 100 can be realized in the avoiding space being put between limit base 230 and supporting plate 220 It is fixed.

Further, surface offers downwards the limiting slot 231 for extending forward, supporting plate 220 to limit base 230 on it Surface offers downwards the accommodation groove 221 that front and back penetrates through on it, and needle stand 120 abuts 221 slot bottom of accommodation groove, and needle handle 130 blocks simultaneously It is located at after limiting slot 231 between 220 rear surface of cell wall and supporting plate.On the one hand the setting of limiting slot 231 and accommodation groove 221 is operation Personnel provide operation and guide, and preliminary fixation on the other hand can be carried out to syringe needle 100, and limit syringe needle 100 and put along the longitudinal direction It sets.

Further, 231 cell wall upper surface of limiting slot is to intermediate, inclined.This be designed as needle stand 120 be placed in guidance Effect.

Referring once again to Fig. 3,221 slot bottom of accommodation groove is arc surface, and its radius of curvature is not less than the song of left arc groove 311 Rate radius.The design can suitably increase the size range for the syringe needle 100 that can be clamped.Particularly, needle stand 120 is limited to hold simultaneously The radius of curvature for setting slot 221, left arc groove 311 and right arc groove 321, as the radius of curvature of accommodation groove 221 is not less than left arc The radius of slot 311 or right arc groove 321, then 100 size of syringe needle that can be clamped in the present embodiment is just only by left 311 He of arc groove The limitation of right arc groove 321.To improve range applicatory.

Referring to figure 4. and Fig. 6, needle fixture further include trigger control 400, and trigger control 400 is fixed on mounting table On 200, when syringe needle 100 is placed on mounting table 200, trigger control 400 is triggered, driver 330 drives left clamp 310 and right clamping plate 320 clamp syringe needle 100.The setting of trigger control 400 improves the degree of automation of 100 clamping device of syringe needle, improves operation effect Rate saves cost of labor.

Further, trigger control 400 is fixed on 231 bottom of limiting slot, on the one hand makes structure more compact, in addition should Design ensures that needle handle 130 is placed into 231 bottom of limiting slot, generates movement in clamping process to avoid placing not in place.

Referring to figure 2. and Fig. 5, clamping component 300 further include left and right extend sliding rail 341, slip respectively with sliding rail 341 Left slider 344, right sliding block 345, left clamp 310 are fixedly connected with left slider 344, right clamping plate 320 and the fixed company of right clamping plate 320 It connects；

Clamping component 300 further includes left screw rod 342 and right screw rod 343, and left slider 344 is socketed on left screw rod 342, right cunning Block 345 is socketed on right screw rod 343, and driver 330 drives left screw rod 342 and right screw rod 343 to rotate, to make left slider 344 It is mobile to centre simultaneously with right sliding block 345.

Left slider 344 and being equipped with for left sliding rail 341, right sliding block 345 and right sliding rail 341 ensure left clamp 310 and the right side Clamping plate 320 moves in left and right directions.Left screw rod 342 and the cooperation of left slider 344, right screw rod 343 and right sliding block 345 cooperatively form two The rotation of driver 330 is converted to and moves left and right by a screw structure, and structure is simple, highly reliable.

In the present embodiment, left slider 344 and left clamp 310 are separate piece, in other embodiments, left slider 344 with Left clamp 310 is integrally designed.

Referring once again to Fig. 5, in the present embodiment, left slider 344 is decomposed into 3442 He of left link block being detachably connected Left link block 3442, moves to left motion block 3441 and left sliding rail 341 is sliding, and left link block 3442 is connect with left clamp 310.Right sliding block 345 be decomposed into be detachably connected move to right motion block 3451 and right link block 3452, it is sliding to move to right motion block 3451 and right sliding rail 341, Right link block 3452 is connect with right clamping plate 320.It is detachably connected the cost that design advantageously reduces part processing.In other reality It applies in example, left slider 344 is wholely set, and right sliding block 345 is wholely set.

Preferably, left 342 outer surface of screw rod is equipped with left-hand thread (not shown), and right 343 outer surface of screw rod is equipped with and left-hand thread The opposite right-hand thread in direction of rotation (not shown), left screw rod 342 and right screw rod 343 are wholely set.Pass through left screw rod 342 and right spiral shell Bar 343 is wholely set, and combines the setting of opposite threads, left when driver 330 drives left screw rod 342 or right screw rod 343 to rotate Sliding block 344 and right sliding block 345 are simultaneously in opposite directions or mutually from movement, so that left clamp 310 and right clamping plate 320 be made to move backward to centre Or deviate from.Structure is simple, and ensures the synchronism of left clamp 310 and the movement of right clamping plate 320.

Embodiment two

The utility model also proposes a kind of automatic blood sampling machine, which includes needle fixture, and syringe needle is fixed The specific structure of device is referring to above-described embodiment one.Since automatic blood sampling machine uses whole technologies of above-mentioned all embodiments one Scheme, therefore all beneficial effects brought by the same technical solution with above-described embodiment, this is no longer going to repeat them.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modification, equivalent replacement or improvement etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims (10)

1. a kind of needle fixture is used for fixed needle, the syringe needle includes sequentially connected shank, needle stand and needle handle, institute It states the cylindrical shape that needle stand is front and back extension and is used to fix the shank, the needle handle is caught for operator to be taken, and feature exists In the needle fixture includes:

Mounting table, for fixing the needle handle；

Clamping component, for clamping the needle stand after the needle handle is fixed on the mounting table, the clamping component includes pair Claim setting left splint, right splint and for drive the left clamp and the right clamping plate move toward one another and to centre it is mobile with The driver of the needle stand is clamped, the right surface of the left clamp offers the left arc groove being recessed to the left, the right clamping plate Left surface offers the right arc groove being recessed to the right, the section of the left arc groove and the right arc groove be single curvature and Curvature is identical and arc core is located at the camber line of same level height.

2. needle fixture as described in claim 1, which is characterized in that the clamping component further includes the cunning that left and right extends Rail, the left slider slipped respectively with the sliding rail, right sliding block, the left clamp are fixedly connected with the left slider, the right folder Plate is connect with the right Boards wall；

The clamping component further includes left screw rod and right screw rod, and the left slider is socketed on the left screw rod, the right sliding block It is socketed on the right screw rod, the driver drives the left screw rod and the right screw rod rotation, to make the left slider It is mobile to centre simultaneously with the right sliding block.

3. needle fixture as claimed in claim 2, which is characterized in that the left screw rod outer surface is equipped with left-hand thread, institute Right screw rod outer surface is stated equipped with the right-hand thread opposite with the left-hand thread direction of rotation, the left screw rod and the right screw rod one Setting.

4. the needle fixture as described in claims 1 to 3 is any, which is characterized in that the mounting table includes bottom plate, fixation On the bottom plate and the supporting plate and limit base of front and back arrangement, the needle handle are fastened between the supporting plate and the limit base, The supporting plate limits the needle handle and moves forward, and the limit base limits the needle handle and moves backward.

5. needle fixture as claimed in claim 4, which is characterized in that surface offers downwards the limit base on it Limiting slot for extending forward, surface offers downwards the accommodation groove that front and back penetrates through to the supporting plate on it, and the needle stand supports Connecing the accommodation groove slot bottom, the needle handle is fastened on after the limiting slot between cell wall and the supporting plate rear surface simultaneously.

6. needle fixture as claimed in claim 5, which is characterized in that the accommodation groove slot bottom is arc surface, and it is bent Rate radius is not less than the radius of curvature of the left arc groove.

7. needle fixture as claimed in claim 6, which is characterized in that the needle fixture further includes triggering control Part, the trigger control are fixed on the mounting table, when the syringe needle is placed on the mounting table, trigger the triggering control Part, the driver drive the left clamp and the right clamping plate to clamp the syringe needle.

8. needle fixture as claimed in claim 7, which is characterized in that the trigger control is fixed on the limiting slot slot Bottom.

9. the needle fixture as described in claim 5 to 8 is any, which is characterized in that the left clamp includes left plate main body With the left clamping element for being connected to the right surface of the left plate main body and extending to the right, the left arc groove is provided with the left clamping element On；The right clamping plate includes right panel main body and the right clamping element that is connected to right panel main body left surface and extends to the left, described Right arc groove is provided on the right clamping element, and the left clamping element and the right clamping element are that elastic material is made.

10. a kind of automatic blood sampling machine, which is characterized in that including needle fixture as described in any one of claim 1 to 9.