CN208823142U - Surgical needle holder for artificial retina nail - Google Patents

Abstract

The utility model provides a kind of surgical needle holder for artificial retina nail comprising: outer tube, outer wall are equipped with bar, and the front end of outer tube is equipped with aperture, and the rear end of outer tube is connected with what operation handle was able to rotate, and operation handle is equipped with push switch；Inner sleeve, it is fixedly arranged in outer tube, the fixed external tube needles in the front end of inner sleeve, external tube needles are pierced by the aperture of outer tube, pressing body is equipped in inner sleeve, the fixed inner tube needle in the front end of pressing body and spring, spring is fixedly arranged on inner sleeve far from one end of pressing body, inner tube needle is successively arranged in spring and external tube needles, the front end of inner tube needle, which is equipped with, can block the bail mouth for setting artificial retina nail, the opening direction of bail mouth and the direction of bar are identical, and pressing physical efficiency drives inner tube needle to move axially under the action of push switch.The utility model, which can adjust, holds needle direction, occupies little space, operates conveniently.

Description

Surgical needle holder for artificial retina nail

Technical field

The utility model relates to the field of medical instrument technology more particularly to a kind of operation for artificial retina nail to hold Needle device.

Background technique

It in the surgical procedures such as artificial retina implantation, needs to follow closely by miniature artificial retina, such as titanium nail, it will Microelectrode part is fixed on retinal area, because the size of artificial retina nail is very small (generally 10mm or less), therefore needs It to be operated by special surgical instrument.

The prior art is to carry out clipping operation by scissor instrument, and still, such instrument was being opened Occupied space is big in journey, is unfavorable for surgical procedure, and existing instrument cannot adjust as needed and hold needle direction, and operation is difficult Degree is big.

Utility model content

The purpose of the utility model is to provide a kind of surgical needle holders for artificial retina nail, can adjust and hold needle Direction occupies little space, and operates conveniently.

Following technical proposal can be used to realize in the above-mentioned purpose of the utility model:

The utility model provides a kind of surgical needle holder for artificial retina nail comprising: outer tube, outer wall Equipped with bar, the front end of the outer tube is equipped with aperture, and the rear end of the outer tube is connected with what operation handle was able to rotate, institute Operation handle is stated equipped with push switch；Inner sleeve is fixedly arranged in the outer tube, the fixed outer tube in the front end of the inner sleeve Needle, the external tube needles are pierced by the aperture of the outer tube, are equipped with pressing body in the inner sleeve, the front end of the pressing body is fixed Inner tube needle and spring, the spring are fixedly arranged on the inner sleeve far from one end of the pressing body, and said inner tube needle is successively worn In in the spring and the external tube needles, the front end of said inner tube needle, which is equipped with, can block the bail mouth for setting artificial retina nail, institute The opening direction for stating bail mouth is identical as the direction of the bar, the pressing physical efficiency band under the action of push switch Dynamic said inner tube needle axial movement.

In a preferred embodiment, the front end of said inner tube needle is semi-cylindrical, the plane of the front end of said inner tube needle The upper recessed bail mouth, the shape for the ailhead that the shape of the bail mouth is followed closely with the artificial retina match.

In a preferred embodiment, the outer tube includes the cone cylinder portion for being successively sheathed on the inner sleeve, rotation tune Section portion and interconnecting piece, the front end in the cone cylinder portion are equipped with the aperture, and bar described in the outer wall projection in the cone cylinder portion is described The rear end in cone cylinder portion is connected with the rotation adjustment portion, and the front end of the operation handle is equipped with the cutting ferrule portion with through-hole, described Interconnecting piece is connected with the cutting ferrule portion by what union was able to rotate.

In a preferred embodiment, the union is spliced by what two semi-circular tubes can be dismantled, the union Front end be threadedly coupled with the interconnecting piece, the rear end of the union is equipped with inner card cage, and the front end in the cutting ferrule portion is equipped with outer Buckle, the clearance fit that the outer buckle can be relatively rotated with the inner card cage.

In a preferred embodiment, the union include the outer ring being connected with the interconnecting piece and with the cutting ferrule portion Connected inner ring, is equipped with multiple balls between the outer ring and the inner ring, the outer ring can be opposite by multiple balls It is rotated in the inner ring.

In a preferred embodiment, the periphery wall of the operation handle, the rotation periphery wall of adjustment portion and described The periphery wall of union is equipped with anti-skidding reticulate pattern.

In a preferred embodiment, sealing ring is equipped between the rotation adjustment portion and the interconnecting piece.

In a preferred embodiment, the inner wall of the operation handle is equipped with internal screw thread, and the outer wall in the cutting ferrule portion is equipped with External screw thread, the operation handle are threadedly coupled with the cutting ferrule portion.

In a preferred embodiment, the inner sleeve includes tapering and canister portion, and the internal diameter in the tapering is less than the cylinder The internal diameter in portion, the rear end of the external tube needles are fixedly arranged in the tapering, and the pressing body is mobile to be set in cartridge, institute It states and is equipped with the spring, the fixed phase of front end face of the spring and cartridge between pressing body and the front end face of cartridge Even.

In a preferred embodiment, the inner sleeve further includes limiting section, after the limiting section is set to cartridge End, radially-inwardly projection necking part, the rear end of the pressing body are equipped with stroke lever, are arranged row on the stroke lever limiting section Journey disk, the journey disk are located at side of the necking part far from the pressing body, and the outer diameter of the journey disk is greater than the contracting The internal diameter of neck.

In a preferred embodiment, the push switch is articulated in the outer wall of the operation handle, the push switch Lower section be equipped with the linkage block that is radially into the operation handle, the rear of the stroke lever is equipped with push pipe, the push pipe energy Mobile is arranged in the cutting ferrule portion and the operation handle and leans with the linkage block.

In a preferred embodiment, the range of the journey disk is 0.5mm~1.5mm.

In a preferred embodiment, the length of the external tube needles is 24mm~28mm, and the outer diameter of the external tube needles is 0.95mm~1.05mm, the internal diameter of the external tube needles are 0.75mm~0.85mm.

In a preferred embodiment, the length of said inner tube needle is 24mm~28mm, and the outer diameter of said inner tube needle is 0.9mm~1mm, the internal diameter of said inner tube needle are 0.7mm~0.8mm.

In a preferred embodiment, the inner sleeve and the outer tube are made of titanium alloy.

The characteristics of surgical needle holder that the utility model is followed closely for artificial retina and advantage are:

1, the utility model by the pressing body in the push switch promotion inner sleeve in operation handle and is fixedly arranged on pressing The inner tube needle of body front end, enables inner tube needle to stretch out external tube needles, sets artificial retina with the bail mouth card using inner tube needle front end and uses Nail, and the spring between the front end face of the canister portion by being set to pressing body and inner tube needle, realize the return of inner tube needle and pressing body, It occupies little space, it is easy to operate, operating difficulty is reduced, the success rate of operation is improved, it is highly-safe, while reducing patients surgery Pain in the process improves patient comfort.

2, inner sleeve is fixedly arranged in outer tube by the utility model, and outer tube is connected with what operation handle was able to rotate, To realize the outer tube rotation synchronous relative to operation handle with inner sleeve, lead to simultaneously by the rotation adjustment portion on outer tube The spring being connected with inner sleeve is crossed, the rotation for driving inner tube needle synchronous with pressing body, to realize the circumference of the bail mouth of inner sleeve The adjusting in direction takes nail from each angle according to personal use habit convenient for doctor or puts nail, using flexible, and by housing Bar is arranged in the outer wall of pipe, and keeps the direction of bar identical as the direction of bail mouth of inner tube needle, with true by bar Determine the opening direction of the bail mouth of inner tube needle, is adjusted convenient for doctor and hold needle direction.

Detailed description of the invention

It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings Obtain other attached drawings.

Fig. 1 is schematic view of the front view of the utility model for the surgical needle holder of artificial retina nail.

Fig. 2 is schematic cross-sectional view of the utility model for the surgical needle holder of artificial retina nail.

Fig. 3 is structural schematic diagram of the utility model for the inner sleeve of the surgical needle holder of artificial retina nail.

Fig. 4 is the partial enlargement structural representation in the portion A in Fig. 3.

Fig. 5 is the schematic cross-sectional view of the union of the utility model and an embodiment in cutting ferrule portion.

Drawing reference numeral explanation:

10, outer tube；11, cone cylinder portion；12, bar；13, adjustment portion is rotated；14, sealing ring；15, interconnecting piece；16, living Connector；

20, inner sleeve；21, tapering；22, canister portion；23, limiting section；231, necking part；24, external tube needles；25, inner tube needle； 251, bail mouth；26, spring；27, pressing body；281, stroke lever；282, journey disk；29, push pipe；

30, operation handle；31, push switch；32, linkage block；33, cutting ferrule portion；

40, artificial retina is followed closely.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

In addition to non-individual defines the direction pointed out, the directions such as front, rear, top, and bottom being referred to herein are with this reality Subject to the directions such as left and right, upper and lower in Fig. 1 shown in novel, illustrate in this together.

As shown in Figures 1 to 5, the utility model provides a kind of surgical needle holder for artificial retina nail, packet Include: outer tube 10, outer wall are equipped with bar 12, and the front end of the outer tube 10 is equipped with aperture, the rear end of the outer tube 10 It is connected with what operation handle 30 was able to rotate, the operation handle 30 is equipped with push switch 31；Inner sleeve 20 is fixedly arranged on described In outer tube 10, the fixed external tube needles 24 in the front end of the inner sleeve 20, the external tube needles 24 are pierced by the aperture of the outer tube 10, Pressing body 27, the fixed inner tube needle 25 in the front end of the pressing body 27 and spring 26, the spring 26 are equipped in the inner sleeve 20 One end far from the pressing body 27 is fixedly arranged on the inner sleeve 20, and said inner tube needle 25 is successively arranged in the spring 26 and institute It states in external tube needles 24, the front end of said inner tube needle 25, which is equipped with, can block the bail mouth 251 for setting artificial retina nail 40, the bail The opening direction of mouth 251 is identical as the direction of the bar 12, and the pressing body 27 can be in the effect of the push switch 31 Lower drive said inner tube needle 25 moves axially.

Specifically, outer tube 10 substantially in a tubular form, is used to accommodate and protect inner sleeve 20, and held for being arranged for instruction The bar 12 in needle direction and the rotation adjustment portion 13 that needle direction is held for adjusting, wherein the opening direction of bail mouth 251 and instruction The direction of item 12 refers to angle direction circumferentially, opening direction, that is, bail mouth 251 opening direction side of bail mouth 251 To angle direction of the direction, that is, bar 12 of bar 12 in 10 circumferential direction of outer tube, i.e. the opening court of bail mouth 251 It is identical as the angle direction of bar 12 in the circumferential to direction, bail mouth 251 is known with the direction by bar 12 Opening direction, wherein bar 12 can be the strip convex block being convexly equipped on outer tube 10 or recessed in the item on outer tube 10 Shape groove, or the strip indicating label being attached on outer tube 10；Operation handle 30 is used to hold for operator, is substantially in long Rod-shaped, to be hollow, to mitigate the weight bearing of operator, the position for facilitating thumb to press is arranged in push switch 31 thereon, Preferably, the end in 30 connecting sleeve portion 33 of operation handle is set, and push switch 31 stretches out outer tube for triggering inner tube needle 25 Needle 24 sets artificial retina nail 40 with card, preferably, the outer diameter of operation handle 30 is 8.3mm；Inner sleeve 20 is also substantially in pipe Shape is fixedly arranged in outer tube 10, and is rotated synchronously with outer tube 10, it is preferred that inner sleeve 20 was interference fitted is set to outer In casing 10 or inner sleeve 20 is clamped with 10 radial direction of outer tube, such as is respectively provided with keyway on inner sleeve 20 and outer tube 10, and By blocking the fixation for setting key and realizing the two in keyway, inner sleeve 20 can drive inner tube needle 25 and pressing body 27 same by spring 26 Step rotation, inner sleeve 20 can also be such that the pressing body 27 in it is moved axially forwards under the action of push switch 31, and in drive Pipe needle 25, which synchronizes, to be moved axially forwards, and so that the front end of inner tube needle 25 is stretched out external tube needles 24, and make the bail mouth of 25 front end of inner tube needle 251 expose, and set artificial retina nail 40 with card.

Further, as shown in figure 4, the front end of said inner tube needle 25 is semi-cylindrical, the front end of said inner tube needle 25 The recessed bail mouth 251 in plane, the shape of the bail mouth 251 and the shape of the artificial retina ailhead of nail 40 Match, specifically, inner tube needle 25 is substantially in a tubular form, to mitigate weight, is used convenient for doctor, certainly, inner tube needle 25 can also be Solid cylindrical, the front end of inner tube needle 25 is in semi-cylindrical, so that the front end of inner tube needle 25 has a cambered surface and a plane, and at it The plane bail mouth 251 that the recessed ailhead shape with artificial retina nail 40 matches at front edge, bail mouth 251 Size can slightly be less than artificial retina follow closely 40 ailhead size, be set as preferably with not influencing card, to avoid artificial view Film nail 40 is fallen, and certainly, the semi-cylindrical or hollow semicolumn tubulose that inner tube needle 25 can also be generally solid are not done herein Limitation, artificial retina nail 40 can be followed closely for titanium, and ailhead is sphere, cone, spheroid, prism and cylindrical body etc., Shape for the ailhead with artificial retina nail 40 matches, and bail mouth 251 can be hemispherical, semicircle cone-shaped, semielliptical Shape, semicylinder etc..

As depicted in figs. 1 and 2, the outer tube 10 includes the cone cylinder portion 11 for being successively sheathed on the inner sleeve 20, rotation Adjustment portion 13 and interconnecting piece 15, the front end in the cone cylinder portion 11 are equipped with the aperture, described in the outer wall projection in the cone cylinder portion 11 Bar 12, the rear end in the cone cylinder portion 11 are connected with the rotation adjustment portion 13, and the front end of the operation handle 30 is equipped with tool There is the cutting ferrule portion 33 of through-hole, the interconnecting piece 15 is connected with the cutting ferrule portion 33 by what union 16 was able to rotate, specifically, outside The tapering in the cone cylinder portion 11 of casing 10 including front end and the canister portion of rear end, tapering is from flaring front to back, the internal diameter of aperture and outer The outer diameter of pipe needle 24 matches, and makes external tube needles 24 are firm to be arranged in aperture and be kept fixed, and bar 12 is substantially in strip Shape axially extends and is radially convexly equipped in 11 outer wall of cone cylinder portion, and wherein the opening direction of bail mouth 251 and bar 12 is convex Set direction is identical, that is, is that radially outward, and the two is axial conllinear (namely the central axis of the two is conllinear), to indicate bail mouth 251 opening direction, the rear end in cone cylinder portion 11 are connected with the front end of rotation adjustment portion 13, and the two can be to be weldingly connected, or integrated It forms, guarantees that the two rotates synchronously, rotation adjustment portion 13 is substantially cylindrical in shape and, guarantee two mutually fixed with the canister portion of inner sleeve 20 22 Person rotates synchronously, and the two can be interference fit, or radial clamping, such as be connected by keyway, in addition, rotation adjustment portion 13 may be used also For nut, 20 outer wall of inner sleeve is equipped with screw thread, is bolted in inner sleeve 20 by rotating adjustment portion 13, realizes inner sleeve 20 and housing The fastening of pipe 10 is connected, and fastening direction holds that the direction of needle is identical with adjustment, avoids adjusting loosening when holding needle, interconnecting piece 15 is substantially It is cylindrical in shape and mutually fixed with the canister portion of inner sleeve 20 22, such as interconnecting piece 15 is closely arranged in the rear end of inner sleeve 20, i.e., two Person can be interference fit, or both for radial clamping, such as be radially clamped by key, guarantee that interconnecting piece 15 is synchronous with inner sleeve 20 Rotation.

In one embodiment, described as shown in figure 5, the union 16 is spliced by what two semi-circular tubes can be dismantled The front end of union 16 is threadedly coupled with the interconnecting piece 15, rotate synchronously the two can, the rear end of the union 16 is equipped with Inner card cage, the front end in the cutting ferrule portion 33 are equipped with outer buckle, and the outer gap that can be relatively rotated with the inner card cage that buckles is matched It closes, specifically, the cross sectional shape of the inner card cage of union 16 generally two axially stacking trapezoidal, the outer buckles in cutting ferrule portion 33 Cross sectional shape also generally two be circumferentially superimposed it is trapezoidal, after making outer be buckled in inner card cage, can axial limiting, avoid Cutting ferrule portion 33 deviates from, while because the two is clearance fit, therefore when outer tube 10 and inner sleeve 20 rotate, union 16 can be the same as outer Casing 10 and inner sleeve 20 are rotated relative to operation handle 30 and cutting ferrule portion 33 together, in order to tune while hand-held operation handle 30 It is whole to hold needle direction, wherein during installation, by union 16 by two semi-circular tubes be sheathed on cutting ferrule portion 33 respectively, and pass through spiral shell The connectors such as bolt realize the fixation of two semi-circular tubes of union 16, then are spirally connected with interconnecting piece 15.In another embodiment, described Union 16 includes the outer ring being connected with the interconnecting piece 15 and the inner ring that is connected with the cutting ferrule portion 33, the outer ring with it is described Multiple balls are equipped between inner ring, the outer ring can be rotated by multiple balls relative to the inner ring, make cutting ferrule portion 33 Relatively fixed with inner ring, interconnecting piece 15 and outer ring can be rotated relative to cutting ferrule portion 33 and inner ring, in order to hand-held operation handle 30 Needle direction is held in adjustment simultaneously.

Further, the periphery wall of the operation handle 30, the periphery wall and the union for rotating adjustment portion 13 16 periphery wall is equipped with anti-skidding reticulate pattern, to increase the frictional force in doctor's operating process, prevents surgical procedure Chinese medicine green hand sliding And it is made to fall or can not adjust direction, avoid safety accident, wherein anti-skidding reticulate pattern can be two sides with symmetrical bending knot The V-structure of structure, and its side length can be 0.75mm~0.85mm or anti-skidding reticulate pattern can be grid-like, triangle trellis etc..

Further, as depicted in figs. 1 and 2, sealing ring is equipped between the rotation adjustment portion 13 and the interconnecting piece 15 14, sealing between the two is realized to cooperate, and is avoided liquid etc. from entering gap and is bred bacterium, and guarantees to rotate smooth, anti-rotation stop Abrasion during dynamic to component, the abrasion occurred in rotation process after especially skidding, i.e. interconnecting piece 15 and rotation adjustment portion It closely presses sealing ring 14 between 13, and rotates mutually fixed, interconnecting piece 15 and inner sleeve between adjustment portion 13 and inner sleeve 20 It is mutually fixed between pipe 20, preferably, sealing ring 14 is made of rubber, certainly, it can also be not provided with sealing ring, but directly will rotation The rear end of adjustment portion 13 is connected with the front end of interconnecting piece 15, herein with no restrictions.

Further, the inner wall of the operation handle 30 is equipped with internal screw thread, and the outer wall in the cutting ferrule portion 33 is equipped with external screw thread, The operation handle 30 is threadedly coupled with the cutting ferrule portion 33, has both realized the fixation between operation handle 30 and cutting ferrule portion 33, Convenient for realizing the connection with union 16 by cutting ferrule portion 33, and can be by adjusting the length that is spirally connected of operation handle 30 and cutting ferrule portion 33 Degree realizes the adjustment to 30 length of operation handle, and then is convenient for adjusting the entire length of surgical needle holder when surgical operation, To adapt to the application of various special circumstances.

As shown in Figures 2 and 3, the inner sleeve 20 includes tapering 21 and canister portion 22, and the internal diameter in the tapering 21 is less than institute The internal diameter of canister portion 22 is stated, the rear end of the external tube needles 24 is fixedly arranged in the tapering 21, and the pressing body 27 is mobile to be set to In cartridge 22, be equipped with the spring 26 between the pressing body 27 and the front end face of cartridge 22, the spring 26 with The front end face of cartridge 22 is fixed to be connected, specifically, the tapering 21 of inner sleeve 20 is equipped with etc. from flaring front to back, tapering 21 The through-hole of diameter through-hole, tapering 21 is opposite with the bore axis of outer tube 10, and isometrical through-hole, canister portion 22 and cone also are provided in canister portion 22 Between portion 21 be equipped with transition bellmouth, tapering 21 be closely arranged in the front end in the cone cylinder portion 11 of outer tube 10 and with cone cylinder portion 11 front end face abuts against, and the rear ends of external tube needles 24 interference fit is worn in the through-hole for being fixed on tapering 21 and from outer tube 10 Aperture be pierced by, i.e. the tapering 21 of inner sleeve 20 and the cone cylinder portion 11 of outer tube 10 is protected for fixing and be oriented to external tube needles 24 The degree of cooperation of external tube needles 24 and inner tube needle 25 is demonstrate,proved, canister portion 22 is closely arranged in the rear end (i.e. two in the cone cylinder portion 11 of outer tube 10 Person is interference fit), and canister portion 22 with the rotation adjustment portion 13 of outer tube 10 is fixed is connected, and canister portion 22 at the same with outer tube 10 Interconnecting piece 15 it is fixed be connected, the rear end of the fixed inner tube needle 25 of the front end face of pressing body 27, while the rear end of fixed spring 26 makes The front end of spring 26 is fixedly arranged at the front end face of canister portion 22, and so that inner tube needle 25 is passed through spring 26 and be arranged in external tube needles 24, Wherein the length of inner tube needle 25 is greater than the length of external tube needles 24, and when not pressing push switch 31, inner tube needle 25 is located at outer tube Without stretching out external tube needles 24 inside needle 24, after pressing push switch 31, inner tube needle 25 can just stretch out external tube needles 24.

Further, as shown in Figures 2 and 3, the inner sleeve 20 further includes limiting section 23, and the limiting section 23 is set to institute The rear end of canister portion 22 is stated, radially-inwardly projection necking part 231, the rear end of the pressing body 27 are equipped with stroke lever to the limiting section 23 281, journey disk 282 is arranged on the stroke lever 281, and the journey disk 282 is located at the necking part 231 far from the pressing body 27 side, the outer diameter of the journey disk 282 is greater than the internal diameter of the necking part 231, specifically, limiting section 23 can the company of being fixedly arranged on In socket part 15, wherein the outer diameter of limiting section 23 is greater than the outer diameter of the canister portion 22 of inner sleeve 20, sets in the interconnecting piece 15 of outer tube 10 There is circumferential recess, the correspondence of limiting section 23 is arranged in the circumferential recess of interconnecting piece 15, realizes the relatively fixed of the two, and make inner sleeve Pipe 20 realize axially position, alternatively, the outer diameter of limiting section 23 be equal to inner sleeve 20 canister portion 22 outer diameter, limiting section 23 with connect It is connected by key between portion 15, necking part 231 can be the circumferential convex block, hemisphere or arc for being convexly equipped in 23 inner wall of limiting section at equal intervals Slope substantially can also be in round bar shape for the circumferential circumferential convex block for being convexly equipped in 23 inner wall of limiting section, stroke lever 281, and outer diameter, which is less than, to be pressed The outer diameter of laminate 27 and the internal diameter for being less than necking part 231, the front end of stroke lever 281 are connected with the rear end of pressing body 27, journey disk 282 is substantially in the form of annular discs, and outer diameter is equal to the outer diameter of pressing body 27 and is equal to the internal diameter (position in addition to necking part of limiting section 23 Set) and greater than the internal diameter of necking part 231, the synchronous axial movement under the drive of stroke lever 281 of journey disk 282, and pass through necking down Portion 231 realizes axial limiting, in addition, the rear and front end of limiting section 23 can also be arranged in respectively to the circumferential recess of interconnecting piece 15 Interior, the rear end of the canister portion 22 of inner sleeve 20 and the front end of limiting section 23 abut against, and what stroke lever 281 moved axially is arranged in limit In portion 23.

In use, necking part 231 can control axial displacement, be stroke and pressing body by controlling journey disk 282 27 stroke realizes Bit andits control, i.e., when pressing body 27 travels forward under the effect of push switch 31, journey disk 282 is abutted extremely The maximum position that can be stretched out when the rear end of necking part 231 for maximum position namely inner tube needle 25, pressing body 27 move back backward It is fully located at when position, when the rear end face of pressing body 27 is abutted to the front end of necking part 231 for initial position namely inner tube needle 25 outer In pipe needle 24, the stroke distances between maximum position and initial position are the range of inner tube needle 25, also as journey disk (range of journey disk 282 is also that its initial position to journey disk 282 is connected at necking part 231 to 282 range The distance between maximum position), preferably, the range of the journey disk 282 is that 0.5mm~1.5mm certainly can also According to actual needs, suitable stroke is set.

Further, as shown in Figures 2 and 3, the push switch 31 is articulated in the outer wall of the operation handle 30, institute The lower section for stating push switch 31 is equipped with the linkage block 32 being radially into the operation handle 30, the rear of the stroke lever 281 Equipped with push pipe 29, the push pipe 29 is mobile be arranged in the cutting ferrule portion 33 and the operation handle 30 and with the linkage block 32 lean, specifically, the outer wall projection drive-connecting shaft of the front end of operation handle 30, what push switch 31 was able to rotate is articulated in pivot joint On axis, linkage block 32 is cuboid, the two sides up and down with push switch 31 distribution and drive-connecting shaft, and can be synchronous around drive-connecting shaft Rotate clockwise or rotate counterclockwise, what push pipe 29 can move axially is arranged in interconnecting piece 15, union 16, cutting ferrule portion 33 Interior, the front end of push pipe 29 is connected with the rear end of stroke lever 281, and the rear end of push pipe 29 can be pierced by the through-hole in cutting ferrule portion 33 and protrude into behaviour Make in handle 30 to lean with linkage block 32, and the active force of linkage block 32 can be passed to pressing body by stroke lever 281 27, and then act on inner tube needle 25, more specifically, the front end of push pipe 29 is in tapered cone barrel, and interconnecting piece 15 and union It for the position that push pipe 29 is worn also is the cone cylinder shape to match in 16, to limit dominant bit when 29 forward axial displacement of push pipe It sets, and the outer diameter of the front end of push pipe 29 is less than the outer diameter of journey disk 282, to limit the position that journey disk 282 is displaced axially backward.

Preferably, external tube needles 24 are substantially in elongated needle tubing shape, and the length of the external tube needles 24 is 24mm~28mm, described The outer diameter of external tube needles 24 is 0.95mm~1.05mm, and the internal diameter of the external tube needles 24 is 0.75mm~0.85mm；Inner tube needle 25 It is substantially in elongated needle tubing shape, and its length is greater than the length of external tube needles 24, the length of said inner tube needle 25 is 24mm~28mm, The outer diameter of said inner tube needle 25 is 0.9mm~1mm, and the internal diameter of said inner tube needle 25 is 0.7mm~0.8mm, by by pressing off It closes 31 and stretches out external tube needles 24 under the action of pressing body 27 and carry out taking needle, and pass through the common work of push switch 31 and spring 26 With the back stitching of realization inner tube needle 25；The inner sleeve 20 and the outer tube 10 are made of titanium alloy, and specially 5 grades of titaniums close Golden (TI-6A1-4V), makes it have that light-weight, elasticity is good, high, nonmagnetic, the rustless advantage of intensity.

The surgical needle holder followed closely for artificial retina of the utility model when in use, when needing using artificial view When film nail 40, doctor's hand-held operation handle 30, thumb is placed in push switch 31, presses push switch 31 clockwise, Linkage block 32 also rotates clockwise and abuts push pipe 29, applies active force axially forward to push pipe 29, push pipe 29 passes through stroke Bar 281 passes to pressing body 27, and pressing body 27 drives 25 forward axial displacement of inner tube needle, to stretch out external tube needles 24, exposes bail Mouth 251, to block the ailhead for setting artificial retina nail 40 by bail mouth 251；After completing to take needle or complete fixed, Yi Shengke Push switch 31 is unclamped, linkage block 32 no longer applies active force axially forward to push pipe 29, acts in the restoring force of spring 26 Under, pressing body 27 drives inner tube needle 25 to be displaced axially backward, and to retract in external tube needles 24, while pressing body 27 pushes against stroke lever 281, push pipe 29 is axial moves back, and push switch 31 rotates counterclockwise rise, and linkage block 32 also rotates counterclockwise；It is held when needing to adjust When needle direction, doctor by another hand rotation rotation adjustment portion 13, rotation adjustment portion 13 drive inner sleeve 20, outer tube 10 and Interconnecting piece 15, union 16, pressing body 27, inner tube needle 25 and external tube needles 24 rotate together (and operation handle 30, push switch 31 Do not turn with cutting ferrule portion 33), realize the adjusting of 251 opening direction of bail mouth, and by the bar 12 on outer tube 10 in circumferential direction On direction synchronous variation, the opening direction of real time reaction bail mouth 251 operates convenient for doctor from all angles, especially suitable The Clinical Ophthalmology doctor to perform the operation for left-handed or the right hand.

The characteristics of surgical needle holder that the utility model is followed closely for artificial retina and advantage are:

1, the utility model by the pressing body 27 in the promotion inner sleeve 20 of push switch 31 in operation handle 30 and is consolidated Inner tube needle 25 set on 27 front end of pressing body, enables inner tube needle 25 to stretch out external tube needles 24, to utilize the bail of 25 front end of inner tube needle 251 card of mouth sets artificial retina nail 40, and between the front end face of the canister portion 22 by being set to pressing body 27 and inner sleeve 20 Spring 26 realizes the return of inner tube needle 25 and pressing body 27, occupies little space, easy to operate, reduces operating difficulty, improves hand The success rate of art, it is highly-safe, while the pain during patients surgery is reduced, improve patient comfort.

2, inner sleeve 20 is fixedly arranged in outer tube 10 by the utility model, and outer tube 10 and operation handle 30 are able to rotate Be connected, to realize outer tube 10 and inner sleeve 20 relative to operation handle 30 by the rotation adjustment portion 13 on outer tube 10 Synchronous rotation, while the spring 26 by being connected with inner sleeve 20, the rotation for driving inner tube needle 25 synchronous with pressing body 27, with The adjusting of the circumferencial direction of the bail mouth 251 of inner sleeve 20 is realized, convenient for doctor is accustomed to according to personal use and takes from each angle Nail, using flexible are followed closely or put, and bar 12 is arranged by the outer wall in outer tube 10, and make direction and the inner tube of bar 12 The direction of the bail mouth 251 of needle 25 is identical, to determine the opening direction of the bail mouth 251 of inner tube needle 25 by bar 12, just Yu doctor adjusts and holds needle direction.

The above is only the preferred embodiment of the utility model, not does in any form to the utility model Limitation, although the utility model has been disclosed with preferred embodiment as above, is not intended to limit the utility model, any affiliated Has usually intellectual in technical field, in the range of not departing from technical solutions of the utility model, when using the disclosure above Technology contents make a little change or be modified to the equivalent embodiment of equivalent variations, but it is all without departing from the utility model technology The content of scheme, it is made by the above technical examples according to the technical essence of the present invention it is any it is simple modification, equivalent variations with Modification, is still within the scope of the technical solutions of the present invention.

Claims (15)

1. a kind of surgical needle holder for artificial retina nail, which is characterized in that described to be used for what artificial retina was followed closely Surgical needle holder includes:

Outer tube, outer wall are equipped with bar, and the front end of the outer tube is equipped with aperture, the rear end of the outer tube and manipulator What handle was able to rotate is connected, and the operation handle is equipped with push switch；

Inner sleeve is fixedly arranged in the outer tube, the fixed external tube needles in the front end of the inner sleeve, and the external tube needles are pierced by described The aperture of outer tube, the inner sleeve is interior to be equipped with pressing body, the fixed inner tube needle in the front end of the pressing body and spring, the spring One end far from the pressing body is fixedly arranged on the inner sleeve, and said inner tube needle is successively arranged in the spring and the external tube needles Interior, the front end of said inner tube needle, which is equipped with, can block the bail mouth for setting artificial retina nail, the opening direction of the bail mouth and institute The direction for stating bar is identical, and the pressing physical efficiency drives said inner tube needle to move axially under the action of the push switch.

2. the surgical needle holder according to claim 1 for artificial retina nail, which is characterized in that said inner tube needle Front end be semi-cylindrical, the recessed bail mouth, the shape of the bail mouth and institute in the plane of the front end of said inner tube needle The shape for stating the ailhead of artificial retina nail matches.

3. the surgical needle holder according to claim 1 for artificial retina nail, which is characterized in that the outer tube Cone cylinder portion, rotation adjustment portion and interconnecting piece including being successively sheathed on the inner sleeve, the front end in the cone cylinder portion is equipped with described Aperture, bar described in the outer wall projection in the cone cylinder portion, the rear end in the cone cylinder portion is connected with the rotation adjustment portion, described The front end of operation handle is equipped with the cutting ferrule portion with through-hole, the phase that the interconnecting piece is able to rotate with the cutting ferrule portion by union Even.

4. the surgical needle holder according to claim 3 for artificial retina nail, which is characterized in that the union It is spliced by what two semi-circular tubes can be dismantled, the front end of the union is threadedly coupled with the interconnecting piece, the union Rear end be equipped with inner card cage, the front end in the cutting ferrule portion is equipped with outer buckle, and the outer buckle can be relatively rotated with the inner card cage Clearance fit.

5. the surgical needle holder according to claim 3 for artificial retina nail, which is characterized in that the union Including the outer ring being connected with the interconnecting piece and the inner ring being connected with the cutting ferrule portion, it is equipped between the outer ring and the inner ring Multiple balls, the outer ring can be rotated by multiple balls relative to the inner ring.

6. the surgical needle holder according to any one of claim 3 to 5 for artificial retina nail, feature exist In the periphery wall of the periphery wall of the operation handle, the periphery wall of the rotation adjustment portion and the union is equipped with anti-skidding Reticulate pattern.

7. the surgical needle holder according to any one of claim 3 to 5 for artificial retina nail, feature exist In equipped with sealing ring between the rotation adjustment portion and the interconnecting piece.

8. the surgical needle holder according to any one of claim 3 to 5 for artificial retina nail, feature exist Be equipped with internal screw thread in the inner wall of, the operation handle, the outer wall in the cutting ferrule portion is equipped with external screw thread, the operation handle with it is described Cutting ferrule portion is threadedly coupled.

9. the surgical needle holder according to claim 3 for artificial retina nail, which is characterized in that the inner sleeve Including tapering and canister portion, the internal diameter in the tapering is less than the internal diameter of cartridge, and the rear end of the external tube needles is fixedly arranged on the cone In portion, the pressing body is mobile to be set in cartridge, and institute is equipped between the pressing body and the front end face of cartridge State spring, the spring with the front end face of cartridge is fixed is connected.

10. the surgical needle holder according to claim 9 for artificial retina nail, which is characterized in that the inner sleeve Pipe further includes limiting section, and the limiting section is set to the rear end of cartridge, and the limiting section radially-inwardly projection necking part is described The rear end of pressing body is equipped with stroke lever, is arranged journey disk on the stroke lever, the journey disk is located at the necking part far from institute The side of pressing body is stated, the outer diameter of the journey disk is greater than the internal diameter of the necking part.

11. the surgical needle holder according to claim 10 for artificial retina nail, which is characterized in that the pressing Switch is articulated in the outer wall of the operation handle, and the lower section of the push switch is equipped with the connection being radially into the operation handle The rear of motion block, the stroke lever is equipped with push pipe, and the push pipe is mobile to be arranged in the cutting ferrule portion and the operation handle And it leans with the linkage block.

12. the surgical needle holder according to claim 10 for artificial retina nail, which is characterized in that the stroke The range of disk is 0.5mm~1.5mm.

13. the surgical needle holder according to claim 1 for artificial retina nail, which is characterized in that the outer tube The length of needle is 24mm~28mm, and the outer diameter of the external tube needles is 0.95mm~1.05mm, and the internal diameter of the external tube needles is 0.75mm~0.85mm.

14. the surgical needle holder according to claim 1 for artificial retina nail, which is characterized in that said inner tube The length of needle is 24mm~28mm, and the outer diameter of said inner tube needle is 0.9mm~1mm, the internal diameter of said inner tube needle be 0.7mm~ 0.8mm。

15. the surgical needle holder according to claim 1 for artificial retina nail, which is characterized in that the inner sleeve Pipe and the outer tube are made of titanium alloy.