WO2019119218A1 - Needle holder for artificial retinal tack - Google Patents
Needle holder for artificial retinal tack Download PDFInfo
- Publication number
- WO2019119218A1 WO2019119218A1 PCT/CN2017/116973 CN2017116973W WO2019119218A1 WO 2019119218 A1 WO2019119218 A1 WO 2019119218A1 CN 2017116973 W CN2017116973 W CN 2017116973W WO 2019119218 A1 WO2019119218 A1 WO 2019119218A1
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- WIPO (PCT)
- Prior art keywords
- needle
- artificial retina
- sleeve
- needle holder
- opening
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
Definitions
- the present invention relates to the field of medical device technology, and in particular to a surgical needle holder for an artificial retina nail.
- the clamping operation is performed by a scissors-type clamping device.
- a clamping device takes up a large space during the opening process, which is not conducive to the surgical operation, and the existing clamping device cannot adjust the needle holding as needed. Direction, surgery is difficult.
- the invention provides a surgical needle holder for an artificial retina nail, comprising: an outer sleeve, the outer wall of which is provided with an indicator strip, the front end of the outer sleeve is provided with an opening, and the rear end of the outer sleeve is operated
- the handle is rotatably connected, the operating handle is provided with a push switch; an inner sleeve is fixed in the outer sleeve, and an outer tube needle is fixed to the front end of the inner sleeve, and the outer tube needle is passed through
- the inner sleeve is provided with a pressing body, and the inner end of the pressing body is fixed with an inner tube needle and a spring, and one end of the spring away from the pressing body is fixed to the inner sleeve.
- the inner tube needle is sequentially disposed in the spring and the outer tube needle, and the front end of the inner tube needle is provided with a nail opening capable of clamping an artificial retina nail, and the opening direction of the nail opening is The direction of the indicator bar is the same, and the pressing body can drive the inner tube needle to move axially under the action of the push switch.
- the invention pushes the pressing body in the inner sleeve and the inner tube needle fixed on the front end of the pressing body by pressing the pressing switch on the operating handle, so that the inner tube needle can extend the outer tube needle to utilize the card opening port of the front end of the inner tube needle
- the artificial retina nail is provided, and the spring between the pressing body and the front end surface of the inner tube needle is realized, and the inner tube needle and the pressing body are returned, occupying a small space, convenient operation, and reducing the operation difficulty.
- the inner sleeve is fixed in the outer sleeve, and the outer sleeve is rotatably connected with the operating handle to realize the synchronous rotation of the outer sleeve and the inner sleeve relative to the operating handle through the rotation adjusting portion on the outer sleeve.
- the spring connected to the inner sleeve drives the inner tube needle and the pressing body to rotate synchronously, so as to realize the circumferential direction adjustment of the inner nailing opening of the inner sleeve, so that the doctor can take the nail from various angles according to personal use habits or
- the nail is placed and used flexibly, and the indicator strip is disposed on the outer wall of the outer sleeve, and the direction of the indicator strip is the same as the direction of the staple opening of the inner needle to determine the opening direction of the staple opening of the inner needle through the indicator strip. It is convenient for the doctor to adjust the direction of the needle.
- Fig. 1 is a front view showing the structure of a surgical needle holder for an artificial retina nail according to the present invention.
- FIG. 2 is a cross-sectional structural view showing a surgical needle holder for an artificial retina nail according to the present invention.
- FIG. 3 is a schematic view showing the structure of an inner sleeve of a surgical needle holder for an artificial retina nail according to the present invention.
- Fig. 4 is a partially enlarged schematic view showing the portion A of Fig. 3;
- Fig. 5 is a cross-sectional structural view showing an embodiment of a union and a ferrule according to the present invention.
- the present invention provides a surgical needle holder for an artificial retina nail, comprising: an outer sleeve 10, the outer wall of which is provided with an indicator strip 12, and the front end of the outer sleeve 10 is provided Opening, the rear end of the outer sleeve 10 is rotatably connected to the operating handle 30, the operating handle 30 is provided with a push switch 31, and the inner sleeve 20 is fixed in the outer sleeve 10, An outer tube needle 24 is fixed to the front end of the inner sleeve 20, and the outer tube needle 24 passes through the opening of the outer sleeve 10.
- the inner sleeve 20 is provided with a pressing body 27, and the front end of the pressing body 27
- the inner tube needle 25 and the spring 26 are fixed, and one end of the spring 26 away from the pressing body 27 is fixed to the inner sleeve 20, and the inner tube needle 25 is sequentially disposed through the spring 26 and the outer portion.
- a front end of the inner needle 25 is provided with a staple opening 251 capable of engaging the artificial retina nail 40, and the opening direction of the staple opening 251 is the same as the direction of the indicator strip 12,
- the pressing body 27 can move the inner needle 25 axially under the action of the push switch 31.
- the outer sleeve 10 is substantially tubular, and is configured to receive and protect the inner sleeve 20, and is configured to provide an indicator strip 12 for indicating the direction of the needle and a rotation adjusting portion 13 for adjusting the direction of the needle, wherein the staple
- the opening direction of the opening 251 and the direction of the indicator strip 12 refer to the circumferential direction of the circumference, the opening direction of the staple opening 251, that is, the opening direction of the staple opening 251, and the direction of the indicator strip 12, that is, the indicator strip 12 is in the outer sleeve.
- the angle of the 10-week upward direction is the direction in which the opening direction of the hook opening 251 is the same as the direction of the direction of the indicator strip 12 in the circumferential direction, so that the opening direction of the staple opening 251 is known by the direction of the indicator strip 12, wherein the indicator strip 12 can be a strip-shaped bump protruding from the outer sleeve 10, or a strip-shaped recess recessed on the outer sleeve 10, or a strip-shaped indicator label attached to the outer sleeve 10; the operating handle 30 is used for The operator holds the hand, which is generally in the shape of a long rod, which is hollow to reduce the load of the operator, and the push switch 31 thereon is disposed at a position convenient for the thumb to press, preferably, the operation handle 30 is connected to the ferrule portion.
- the inner tube needle 25 extends out of the outer tube needle 24 to engage the artificial retina nail 40.
- the outer diameter of the operating handle 30 is 8.3 mm; the inner sleeve 20 is also generally tubular, and is fixed to the outer sleeve 10 And rotating synchronously with the outer sleeve 10, preferably, the inner sleeve 20 is disposed in the outer sleeve 10 with an interference fit, or the inner sleeve 20 is radially engaged with the outer sleeve 10, such as the inner sleeve 20 and the outer sleeve
- the tube 10 is provided with a keyway, and the two are fixed by a key in the keyway.
- the inner sleeve 20 can drive the inner needle 25 and the pressing body 27 to rotate synchronously by the spring 26, and the inner sleeve 20 can also press the switch. Under the action of 31, the pressing body 27 therein is moved axially forward, and the inner tube needle 25 is driven to move axially forward, so that the front end of the inner tube needle 25 protrudes out of the outer tube needle 24, and the inner tube needle 25 is caused. The staple opening 251 of the front end is exposed to clamp the artificial retina nail 40.
- the front end of the inner needle 25 is semi-cylindrical, and the nail opening 251 is recessed in the plane of the front end of the inner needle 25, and the shape of the nail opening 251
- the shape of the nail head of the artificial retina nail 40 is matched.
- the inner needle 25 is substantially tubular to reduce the weight and is convenient for the doctor to use.
- the inner needle 25 can also be a solid column, the inner needle
- the front end of the 25 is semi-cylindrical such that the front end of the inner needle 25 has a curved surface and a flat surface, and a nail opening corresponding to the shape of the nail head of the artificial retina nail 40 is recessed in the plane near the front end edge.
- the size of the staple opening 251 can be slightly smaller than the size of the nail head of the artificial retina nail 40, so as not to affect the card, to avoid the artificial retina nail 40 falling, of course, the inner needle 25 can also be Solid semi-cylindrical or hollow semi-cylindrical tube, which is not limited herein, the artificial retina nail 40 can be a titanium nail, and the nail head is a sphere, a cone, an ellipsoid, a prism and a cylinder, etc., and the artificial retina The shape of the nail head of the nail 40 is matched, and the nail opening 251 can be Hemispherical, semi-conical, semi-ellipsoidal, semi-cylinder and the like.
- the outer sleeve 10 includes a tapered tubular portion 11, a rotation adjusting portion 13 and a connecting portion 15 which are sequentially sleeved on the inner sleeve 20.
- the front end of the tapered tubular portion 11 is provided.
- the opening, the outer wall of the cone portion 11 protrudes from the indicator strip 12, the rear end of the cone portion 11 is connected to the rotation adjusting portion 13, and the front end of the operating handle 30 is provided with a through a ferrule portion 33 of the hole, the connecting portion 15 and the ferrule portion 33 are rotatably connected by the union 16 .
- the cone portion 11 of the outer sleeve 10 includes a tapered portion at the front end and a cylindrical portion at the rear end.
- the tapered portion is gradually expanded from the front to the rear, and the inner diameter of the opening matches the outer diameter of the outer needle 24, so that the outer needle 24 is stably penetrated through the opening and remains fixed, and the indicator strip 12 is substantially elongated.
- the opening direction of the pin opening 251 is the same as the protruding direction of the indicator strip 12, that is, both are radially outward, and the two are axially collinear (that is, the central axes of the two are collinear) to indicate the opening direction of the staple opening 251, and the rear end of the cone portion 11 is connected to the front end of the rotation adjusting portion 13, which may be Connected together, or integrally formed to ensure the synchronous rotation of the two, the rotation adjusting portion 13 is substantially cylindrical and fixed with the tubular portion 22 of the inner sleeve 20 to ensure the synchronous rotation of the two, the two can be an interference fit, or Radially engaging, for example, by a keyway.
- the rotation adjusting portion 13 can also be a nut.
- the outer wall of the inner sleeve 20 is provided with a thread, and is screwed to the inner sleeve 20 through the rotation adjusting portion 13, thereby realizing the inner sleeve 20 and the outer sleeve.
- the tube 10 is fastened and connected, and the fastening direction is the same as the direction of adjusting the needle, so as to avoid loosening when the needle is held, the connecting portion 15 is substantially cylindrical and fixed to the tubular portion 22 of the inner sleeve 20, for example, connected.
- the portion 15 is tightly clamped at the rear end of the inner sleeve 20, that is, the two may be an interference fit, or the two are radially snapped, for example, by radial key snapping, to ensure the joint portion 15 and the inner sleeve 20 Rotate synchronously.
- the union 16 is detachably spliced by two semicircular tubes, and the front end of the union 16 is screwed to the connecting portion 15 so that the two can be synchronized.
- the rear end of the joint 16 is provided with an inner card slot
- the front end of the ferrule portion 33 is provided with an outer buckle
- the outer buckle is matched with the inner card slot for relative rotation
- the cross-sectional shape of the inner card slot of the union 16 is substantially two axially superimposed trapezoids
- the cross-sectional shape of the outer buckle of the ferrule portion 33 is also generally two trapezoidal layers that are circumferentially superimposed, so that the outer snap fastener is buckled on
- the inner card slot is inside, it can be axially restrained to prevent the ferrule portion 33 from coming out, and at the same time, because the two are gap-fitted, when the outer sleeve 10 and the inner sleeve 20 rotate, the joint 16 can be the same as
- the sleeve 20 is rotated together with respect to the operating handle 30 and the ferrule portion 33 to facilitate the adjustment of the needle holding direction while the handle 30 is being manipulated, wherein, during installation, the two semi-circular tubes from the joint 16 are respectively sleeved on the card.
- the union 16 includes an outer ring connected to the connecting portion 15 and an inner ring connected to the ferrule portion 33, and the outer ring is provided between the inner ring and the inner ring.
- the outer ring is rotatable relative to the inner ring by a plurality of the balls, so that the ferrule portion 33 and the inner ring are relatively fixed, and the connecting portion 15 and the outer ring are rotatable relative to the ferrule portion 33 and the inner ring, In order to adjust the needle holding direction while holding the operating handle 30.
- the outer peripheral wall of the operating handle 30, the outer peripheral wall of the rotation adjusting portion 13 and the outer peripheral wall of the joint 16 are provided with anti-slip mesh to increase the friction during the operation of the doctor and prevent the surgical process.
- the non-slip mesh can be a V-shaped structure with symmetric bending structures on both sides, and its side length can be 0.75mm ⁇ 0.85mm.
- the anti-slip mesh may be a square shape, a triangular lattice shape or the like.
- a sealing ring 14 is disposed between the rotation adjusting portion 13 and the connecting portion 15 to cooperate to achieve a seal between the two, so as to prevent liquids and the like from entering the gap to breed bacteria. And ensuring smooth rotation, preventing wear of the components during the rotation process, in particular, wear occurring during the rotation after the slipping, that is, the sealing ring 14 is tightly pressed between the connecting portion 15 and the rotation adjusting portion 13, and the rotation adjusting portion 13
- the inner sleeve 20 is fixedly disposed, and the connecting portion 15 and the inner sleeve 20 are fixed.
- the sealing ring 14 is made of rubber.
- the sealing ring is not provided, but the rotation is directly performed.
- the rear end of the adjustment portion 13 is connected to the front end of the connection portion 15, and is not limited herein.
- the inner wall of the operating handle 30 is provided with an internal thread
- the outer wall of the ferrule portion 33 is provided with an external thread
- the operating handle 30 is screwed with the ferrule portion 33, thereby realizing the operation handle 30 and
- the fixing between the ferrule portions 33 facilitates the connection with the union 16 through the ferrule portion 33, and the adjustment of the length of the operating handle 30 by adjusting the screwing length of the operating handle 30 and the ferrule portion 33, thereby It is convenient for the doctor to adjust the overall length of the needle holder to suit various special situations.
- the inner sleeve 20 includes a tapered portion 21 having an inner diameter smaller than an inner diameter of the cylindrical portion 22 and a cylindrical portion 22, and a rear end of the outer tubular needle 24 is fixed.
- the pressing body 27 is movably disposed in the tubular portion 22, and the spring 26 is disposed between the pressing body 27 and the front end surface of the tubular portion 22, The spring 26 is fixedly connected to the front end surface of the tubular portion 22.
- the tapered portion 21 of the inner sleeve 20 is gradually expanded from the front to the rear, and the equal-diameter through hole is provided in the tapered portion 21, and the through hole of the tapered portion 21 is provided.
- the tubular portion 22 is also provided with an equal-diameter through hole, and a transitional tapered hole is provided between the tubular portion 22 and the tapered portion 21, and the tapered portion 21 is tightly attached to the outer sleeve 10
- the front end of the tapered tubular portion 11 abuts against the front end surface of the tapered tubular portion 11, and the rear end of the outer tubular needle 24 is inserted into the through hole of the tapered portion 21 with an interference fit and is worn through the opening of the outer sleeve 10.
- the tapered portion 21 of the inner sleeve 20 and the tapered portion 11 of the outer sleeve 10 are used to fix and guide the outer needle 24, and to ensure the degree of cooperation between the outer needle 24 and the inner needle 25, and the tubular portion 22 is tightly worn.
- the tubular portion 22 is fixedly connected to the rotation adjusting portion 13 of the outer sleeve 10, and the tubular portion 22 is simultaneously fixedly connected with the connecting portion 15 of the outer sleeve 10, and the front end surface of the pressing body 27 is fixed.
- the rear end of the inner needle 25 is fixed to the rear end of the spring 26, so that the front end of the spring 26 is fixed to the front end surface of the tubular portion 22, and the inner needle 25 is passed through the spring 26 and is inserted through the outer needle. 24, wherein the length of the inner needle 25 is greater than the length of the outer needle 24, when the push switch 31 is not pressed, the inner needle 25 is located inside the outer needle 24 without protruding the outer needle 24, when pressed After the switch 31, the inner needle 25 will extend out of the outer needle 24.
- the inner sleeve 20 further includes a limiting portion 23, the limiting portion 23 is disposed at a rear end of the cylindrical portion 22, and the limiting portion 23 is radial.
- a constricted portion 231 is formed inwardly, and a rear end of the pressing body 27 is provided with a stroke rod 281, and the stroke rod 281 is sleeved with a stroke disc 282, and the stroke disc 282 is located at the constricted portion 231 away from the
- the outer diameter of the stroke plate 282 is larger than the inner diameter of the constricted portion 231.
- the limiting portion 23 can be fixed in the connecting portion 15 , wherein the outer diameter of the limiting portion 23
- the outer diameter of the tubular portion 22 of the inner sleeve 20 is larger, and the connecting portion 15 of the outer sleeve 10 is provided with a circumferential groove.
- the limiting portion 23 is correspondingly disposed in the circumferential groove of the connecting portion 15 to achieve relative fixation therebetween.
- the inner sleeve 20 is axially positioned, or the outer diameter of the limiting portion 23 is equal to the outer diameter of the tubular portion 22 of the inner sleeve 20, and the limiting portion 23 and the connecting portion 15 are connected by a key to shrink the neck portion 231.
- the protrusion, the hemisphere or the arc slope may be protruded from the inner wall of the limiting portion 23 at equal intervals in the circumferential direction, or may be a circumferential protrusion protruding from the inner wall of the limiting portion 23 in the circumferential direction, and the stroke rod 281 is substantially in the shape of a round rod.
- the outer diameter is smaller than the outer diameter of the pressing body 27 and smaller than the inner diameter of the constricted portion 231, and the front end of the stroke rod 281 is connected to the rear end of the pressing body 27, and the stroke disc 282 is substantially disk-shaped, and the outer diameter thereof is equal to that of the pressing body 27.
- the outer diameter is equal to the inner diameter of the limiting portion 23 (the position other than the constricted neck) and larger than the inner diameter of the constricted portion 231.
- the travel disc 282 is synchronously moved axially by the stroke rod 281 and passes through the constricted portion. 231, the axial limit is achieved.
- the front and rear ends of the limiting portion 23 can be respectively engaged in the circumferential groove of the connecting portion 15, and the rear end of the tubular portion 22 of the inner sleeve 20 and the front end of the limiting portion 23 Abutting, the stroke rod 281 is axially moved and disposed in the limiting portion 23.
- the constricted portion 231 can control the axial displacement by controlling the stroke of the travel disc 282 and the stroke of the pressing body 27, that is, when the pressing body 27 moves forward under the action of the push switch 31, the stroke
- the disk 282 abuts to the rear end of the constricted portion 231, it is the maximum position, that is, the maximum position at which the inner tube needle 25 can be extended.
- the rear end surface of the pressing body 27 abuts to the contraction.
- the front end of the neck portion 231 is the initial position, that is, the inner needle 25 is completely located in the outer needle 24, and the stroke distance between the maximum position and the initial position is the maximum stroke of the inner needle 25, that is, the travel disc 282.
- the maximum stroke (the maximum stroke of the travel disc 282 is the distance between its initial position and the maximum position at which the travel disc 282 abuts against the constricted portion 231).
- the maximum travel of the travel disc 282 is 0.5mm to 1.5mm, of course, you can also set the appropriate stroke according to actual needs.
- the push switch 31 is pivotally connected to the outer wall of the operating handle 30, and the lower side of the push switch 31 is provided with a linkage extending radially into the operating handle 30.
- a block 32, a top tube 29 is disposed at the rear of the stroke rod 281, and the top tube 29 is movably disposed on the ferrule portion 33 and the operating handle 30 and abuts against the linkage block 32.
- the outer wall of the front end of the operating handle 30 protrudes from the pivoting shaft, and the pressing switch 31 is pivotally connected to the pivoting shaft.
- the linkage block 32 has a rectangular parallelepiped shape, and the upper and lower sides of the pivoting shaft 31 are distributed with the pressing switch 31.
- the top tube 29 can be axially moved through the connecting portion 15, the joint 16, the ferrule portion 33, the front end of the top tube 29 and the stroke rod
- the rear end of the 281 is connected, and the rear end of the top tube 29 can pass through the through hole of the ferrule portion 33 and protrude into the operating handle 30 to abut against the linkage block 32, and can pass the force of the linkage block 32 through the stroke rod 281. It is transmitted to the pressing body 27, and then acts on the inner tube needle 25.
- the front end of the top tube 29 has a tapered cone shape and is connected
- the position in the portion 15 and the union 16 for the top tube 29 to be pierced is also a matching cone shape to define the maximum position when the top tube 29 is axially displaced forward, and the outer diameter of the front end of the top tube 29 is smaller than the stroke.
- the outer diameter of the disk 282 is defined to define a position in which the travel disk 282 is axially displaced rearward.
- the outer needle 24 is substantially elongated and has a needle-shaped tubular shape, the outer needle 24 has a length of 24 mm to 28 mm, and the outer needle 24 has an outer diameter of 0.95 mm to 1.05 mm.
- the inner diameter of the inner tube needle 25 is also generally elongated and tubular, and the length thereof is larger than the length of the outer tube needle 24, and the inner tube needle 25 has a length of 24 mm to 28 mm.
- the outer diameter of the needle 25 is 0.9 mm to 1 mm, and the inner diameter of the inner needle 25 is 0.7 mm to 0.8 mm, so as to take the needle by pressing the switch 31 and extending the outer needle 24 under the action of the pressing body 27, and pass
- the push switch 31 and the spring 26 cooperate to realize the return pin of the inner pin 25;
- the inner sleeve 20 and the outer sleeve 10 are both made of titanium alloy, specifically a 5-stage titanium alloy (TI-6A1-4V) ), it has the advantages of light weight, good elasticity, high strength, no magnetism, no rust.
- the surgical needle holder for the artificial retina nail of the present invention When the surgical needle holder for the artificial retina nail of the present invention is used, when the artificial retina nail 40 is required, the doctor holds the operation handle 30, the thumb is placed on the push switch 31, and the push switch is pressed clockwise. 31, the linkage block 32 also rotates clockwise and abuts against the top tube 29, applying an axial forward force to the top tube 29, the top tube 29 is transmitted to the pressing body 27 through the stroke rod 281, and the pressing body 27 drives the inner tube needle 25.
- the axial direction is displaced forward to extend the outer needle 24 to expose the nail opening 251 to fix the nail head of the artificial retina nail 40 through the nail opening 251; when the needle is taken or the fixing is completed, the doctor can release the pressing
- the switch 31 and the linkage block 32 no longer apply an axial forward force to the top tube 29.
- the pressing body 27 drives the inner needle 25 to axially rearward to retract the outer needle.
- the adjustment of the opening direction and the synchronous change of the indicator strip 12 on the outer sleeve 10 in the circumferential direction can reflect the opening direction of the staple opening 251 in real time, so that the doctor can operate from various angles, and is particularly suitable for the operation of the left or right hand.
- the present invention pushes the pressing body 27 in the inner sleeve 20 and the inner tube needle 25 fixed to the front end of the pressing body 27 by operating the push switch 31 on the handle 30, so that the inner tube needle 25 can extend out of the outer tube needle 24 to utilize
- the staple port 251 at the front end of the inner needle 25 is provided with the artificial retina nail 40, and the inner needle 25 is pressed and pressed by the spring 26 provided between the pressing body 27 and the front end surface of the tubular portion 22 of the inner sleeve 20.
- the return of the body 27 takes up a small space and is convenient to operate, reduces the difficulty of surgery, improves the success rate of the operation, and has high safety, and at the same time reduces the pain during the operation of the patient and improves the comfort of the patient.
- the inner sleeve 20 is fixed in the outer sleeve 10, and the outer sleeve 10 is rotatably connected to the operating handle 30 to pass the rotation adjusting portion 13 on the outer sleeve 10 to realize the outer sleeve 10 and the inner sleeve.
- the tube 20 is rotated synchronously with respect to the operating handle 30, and simultaneously the inner tube needle 25 and the pressing body 27 are rotated synchronously by the spring 26 connected to the inner sleeve 20 to achieve the circumferential direction of the staple opening 251 of the inner sleeve 20.
- the adjustment is convenient for the doctor to take nails or put nails from various angles according to personal use habits, is flexible to use, and is provided with the indicator strip 12 on the outer wall of the outer sleeve 10, and the direction of the indicator strip 12 and the staple of the inner needle 25
- the direction of the mouth 251 is the same to determine the opening direction of the staple opening 251 of the inner needle 25 by the indicator strip 12, so that the doctor can adjust the needle holding direction.
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Abstract
Description
本发明涉及医疗器械技术领域，尤其涉及一种用于人造视网膜用钉的手术持针器。The present invention relates to the field of medical device technology, and in particular to a surgical needle holder for an artificial retina nail.
在人造视网膜植入等手术过程中，需要通过微型的人造视网膜用钉，比如钛钉，将微电极部分固定在视网膜区域，因人造视网膜用钉的尺寸非常小(一般为10mm以下)，故需要由专门的手术器械进行操作。In the surgical procedure such as artificial retinal implantation, it is necessary to fix the microelectrode portion in the retina area through a miniature artificial retina nail, such as a titanium nail, because the size of the artificial retina nail is very small (generally 10 mm or less), so it is required Operated by specialized surgical instruments.
现有技术均是通过剪刀式夹持器械进行夹持操作，但是，该类夹持器械在张开过程中占用空间大，不利于手术操作，且现有的夹持器械不能根据需要调整持针方向，手术难度大。In the prior art, the clamping operation is performed by a scissors-type clamping device. However, such a clamping device takes up a large space during the opening process, which is not conducive to the surgical operation, and the existing clamping device cannot adjust the needle holding as needed. Direction, surgery is difficult.
发明内容Summary of the invention
本发明的目的是提供一种用于人造视网膜用钉的手术持针器，其能调整持针方向，占用空间小，操作便利。It is an object of the present invention to provide a surgical needle holder for an artificial retina nail which can adjust the needle holding direction, takes up less space, and is convenient to operate.
本发明提供一种用于人造视网膜用钉的手术持针器，其包括：外套管，其外壁设有指示条，所述外套管的前端设有开孔，所述外套管的后端与操作手柄能转动的相连，所述操作手柄上设有按压开关；内套管，其固设于所述外套管内，所述内套管的前端固设外管针，所述外管针穿出所述外套管的开孔，所述内套管内设有按压体，所述按压体的前端固设内管针和弹簧，所述弹簧远离所述按压体的一端固设于所述内套管，所述内管针依次穿设于所述弹簧和所述外管针内，所述内管针的前端设有能卡设人造视网膜用钉的卡钉口，所述卡钉口的开口方向与所述指示条的方向相同，所述按压体能在所述按压开关的作用下带动所述内管针轴向移动。The invention provides a surgical needle holder for an artificial retina nail, comprising: an outer sleeve, the outer wall of which is provided with an indicator strip, the front end of the outer sleeve is provided with an opening, and the rear end of the outer sleeve is operated The handle is rotatably connected, the operating handle is provided with a push switch; an inner sleeve is fixed in the outer sleeve, and an outer tube needle is fixed to the front end of the inner sleeve, and the outer tube needle is passed through The inner sleeve is provided with a pressing body, and the inner end of the pressing body is fixed with an inner tube needle and a spring, and one end of the spring away from the pressing body is fixed to the inner sleeve. The inner tube needle is sequentially disposed in the spring and the outer tube needle, and the front end of the inner tube needle is provided with a nail opening capable of clamping an artificial retina nail, and the opening direction of the nail opening is The direction of the indicator bar is the same, and the pressing body can drive the inner tube needle to move axially under the action of the push switch.
本发明用于人造视网膜用钉的手术持针器的特点及优点是：The features and advantages of the surgical needle holder for the artificial retina nail of the present invention are:
1、本发明通过操作手柄上的按压开关推动内套管内的按压体和固设于按压体前端的内管针，使内管针能伸出外管针，以利用内管针前端的卡钉口卡设人造视网膜用钉，并通过设于按压体与内管针的筒部的前端面之间的弹簧，实现内管针和按压体的回位，占用空间小，操作方便，降低了手术难度，提高手术的成功率，安全性高，同时降低患者手术过程中的痛苦，提高患者舒适性。1. The invention pushes the pressing body in the inner sleeve and the inner tube needle fixed on the front end of the pressing body by pressing the pressing switch on the operating handle, so that the inner tube needle can extend the outer tube needle to utilize the card opening port of the front end of the inner tube needle The artificial retina nail is provided, and the spring between the pressing body and the front end surface of the inner tube needle is realized, and the inner tube needle and the pressing body are returned, occupying a small space, convenient operation, and reducing the operation difficulty. Improve the success rate of surgery, high safety, while reducing the pain during the patient's surgery and improve patient comfort.
2、本发明将内套管固设于外套管内，并将外套管与操作手柄能转动的相连，以通过外套管上的旋转调节部，实现外套管和内套管相对于操作手柄同步的转动，同时通过与内套管相连的弹簧，带动内管针和按压体同步的转动，以实现内套管的卡钉口的圆周方向的调节，便于医生根据个人使用习惯而从各角度取钉或放钉，使用灵活，并通过在外套管的外壁设置指示条，且使指示条的方向与内管针的卡钉口的方向相同，以通过指示条确定内管针的卡钉口的开口方向，便于医生调节持针方向。2. The inner sleeve is fixed in the outer sleeve, and the outer sleeve is rotatably connected with the operating handle to realize the synchronous rotation of the outer sleeve and the inner sleeve relative to the operating handle through the rotation adjusting portion on the outer sleeve. At the same time, the spring connected to the inner sleeve drives the inner tube needle and the pressing body to rotate synchronously, so as to realize the circumferential direction adjustment of the inner nailing opening of the inner sleeve, so that the doctor can take the nail from various angles according to personal use habits or The nail is placed and used flexibly, and the indicator strip is disposed on the outer wall of the outer sleeve, and the direction of the indicator strip is the same as the direction of the staple opening of the inner needle to determine the opening direction of the staple opening of the inner needle through the indicator strip. It is convenient for the doctor to adjust the direction of the needle.
图1为本发明用于人造视网膜用钉的手术持针器的主视结构示意图。Fig. 1 is a front view showing the structure of a surgical needle holder for an artificial retina nail according to the present invention.
图2为本发明用于人造视网膜用钉的手术持针器的剖视结构示意图。2 is a cross-sectional structural view showing a surgical needle holder for an artificial retina nail according to the present invention.
图3为本发明用于人造视网膜用钉的手术持针器的内套管的结构示意图。3 is a schematic view showing the structure of an inner sleeve of a surgical needle holder for an artificial retina nail according to the present invention.
图4为图3中的A部的局部放大结构示意图。Fig. 4 is a partially enlarged schematic view showing the portion A of Fig. 3;
图5为本发明的活接头与卡套部的一实施例的剖视结构示意图。Fig. 5 is a cross-sectional structural view showing an embodiment of a union and a ferrule according to the present invention.
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
除非单独定义指出的方向以外，本文中涉及到的前、后、上、下等方向均是以本发明所示的图1中的左、右、上、下等方向为准，在此一并说明。Unless otherwise stated, the front, back, up, and down directions referred to herein are based on the left, right, up, and down directions in Figure 1 of the present invention. Description.
如图1至图5所示，本发明提供一种用于人造视网膜用钉的手术持针器，其包括：外套管10，其外壁设有指示条12，所述外套管10的前端设有开孔，所述外套管10的后端与操作手柄30能转动的相连，所述操作手柄30上设有按压开关31；内套管20，其固设于所述外套管10内，所述内套管20的前端固设外管针24，所述外管针24穿出所述外套管10的开孔，所述内套管20内设有按压体27，所述按压体27的前端固设内管针25和弹簧26，所述弹簧26远离所述按压体27的一端固设于所述内套管20，所述内管针25依次穿设于所述弹簧26和所述外管针24内，所述内管针25的前端设有能卡设人造视网膜用钉40的卡钉口251，所述卡钉口251的开口方向与所述指示条12的方向相同，所述按压体27能在所述按压开关31的作用下带动所述内管针25轴向移动。As shown in FIG. 1 to FIG. 5, the present invention provides a surgical needle holder for an artificial retina nail, comprising: an
具体的，外套管10大体呈管状，其用于容纳并保护内套管20，且用于设置供指示持针方向的指示条12和供调整持针方向的旋转调节部13，其中，卡钉口251的开口方向与指示条12的方向均指的是沿圆周的角度方向，卡钉口251的开口方向即卡钉口251的开口朝向方向，指示条12的方向即指示条12在外套管10周向上的角度朝向方向，即卡钉口251的开口朝向方向与指示条12在周向上的角度朝向方向相同，以通过指示条12的方向知晓卡钉口251的开口方向，其中，指示条12可为凸设于外套管10上的条状凸块，或凹设于外套管10上的条状凹槽，或贴设于外套管10上的条状指示标签；操作手柄30用于供操作者手握，其大体呈长杆状，其为空心，以减轻操作者的负重，其上的按压开关31设置在方便大拇指按压的位置，优选的，设置在操作手柄30连接卡套部33的端部，按压开关31用于触发内管针25伸出外管针24，以卡设人造视网膜用钉40，较佳的，操作手柄30的外径为8.3mm；内套管20也大体呈管状，其固设于外套管10内，并与外套管10同步转动，优选的，内套管20过盈配合的设置于外套管10内，或内套管20与外套管10径向卡接，例如在内套管20和外套管10上均设置键槽，并通过在键槽内卡设键实现二者的固定，内套管20能通过弹簧26带动内管针25和按压体27同步转动，内套管20还能在按压开关31的作用下，使其内的按压体27轴向向前运动，并带动内管针25同步轴向向前运动，使内管针25的前端伸出外管针24，并使内管针25前端的卡钉口251裸露出来，以卡设人造视网膜用钉40。Specifically, the
进一步的，如图4所示，所述内管针25的前端为半圆柱形，所述内管针25的前端的平面上凹设所述卡钉口251，所述卡钉口251的形状与所述人造视网膜用钉40的钉头的形状相匹配，具体的，内管针25大体呈管状，以减轻重量，便于医生使用，当然，内管针25也可为实心柱状，内管针25的前端呈半圆柱形，以使内管针25的前端具有一弧面和一平面，并在其平面靠近前端边缘处凹设与人造视网膜用钉40的钉头形状相匹配的卡钉口251，卡钉口251的尺寸可微微小于人造视网膜用钉40的钉头的尺寸，以不影响卡设为宜，以避免人造视网膜用钉40掉落，当然，内管针25也可整体为实心的半圆柱状或空心的半圆柱管状，在此不做限制，人造视网膜用钉40可以为钛钉，其钉头为球体、圆锥体、椭球体、棱柱体和圆柱体等，为与人造视网膜用钉40的钉头的形状相匹配，卡钉口251可为半球形、半圆锥体形、半椭球形、半圆柱体等。Further, as shown in FIG. 4, the front end of the
如图1和图2所示，所述外套管10包括依次套设于所述内套管20的锥筒部11、旋转调节部13和连接部15，所述锥筒部11的前端设有所述开孔，所述锥筒部11的外壁 凸设所述指示条12，所述锥筒部11的后端与所述旋转调节部13相连，所述操作手柄30的前端设有具有通孔的卡套部33，所述连接部15与所述卡套部33通过活接头16能转动的相连，具体的，外套管10的锥筒部11包括前端的锥部和后端的筒部，锥部自前至后渐扩，其开孔的内径与外管针24的外径相匹配，使外管针24稳固的穿设于开孔并保持固定，其指示条12大体呈长条状，沿轴向延伸并沿径向凸设于锥筒部11外壁，其中卡钉口251的开口方向与指示条12的凸设方向相同，即均为径向向外，且二者轴向共线(也即二者的中心轴线共线)，以指示卡钉口251的开口方向，锥筒部11的后端与旋转调节部13的前端相连，二者可为焊接相连，或一体成型，保证二者同步转动，旋转调节部13大体呈筒状并与内套管20的筒部22相固设，保证二者同步转动，二者可为过盈配合，或径向卡接，例如通过键槽相连，另外，旋转调节部13还可为螺母，内套管20外壁设有螺纹，通过旋转调节部13螺接于内套管20，实现内套管20与外套管10紧固相连，其紧固方向与调整持针的方向相同，避免调整持针时的松脱，连接部15大体呈筒状并与内套管20的筒部22相固设，例如连接部15紧密的卡设于内套管20的后端，即二者可为过盈配合，或二者为径向卡接，例如通过键径向卡接，保证连接部15与内套管20同步转动。As shown in FIG. 1 and FIG. 2, the
在一实施例中，如图5所示，所述活接头16由两个半圆管能拆卸的拼接而成，所述活接头16的前端与所述连接部15螺纹连接，使二者能同步转动，所述活接头16的后端设有内卡槽，所述卡套部33的前端设有外卡扣，所述外卡扣与所述内卡槽能相对转动的间隙配合，具体的，活接头16的内卡槽的截面形状大体为两个轴向叠加的梯形，卡套部33的外卡扣的截面形状也大体为两个周向叠加的梯形，使外卡扣扣设于内卡槽内后，能轴向限位，避免卡套部33脱出，同时因二者为间隙配合，故在外套管10和内套管20旋转时，活接头16能同外套管10和内套管20一起相对操作手柄30和卡套部33转动，以便于手握操作手柄30的同时调整持针方向，其中，在安装时，将活接头16由的两个半圆管分别套设于卡套部33，并通过螺栓等连接件实现活接头16的两个半圆管的固定，再与连接部15螺接。在另一实施例中，所述活接头16包括与所述连接部15相连的外环和与所述卡套部33相连的内环，所述外环与所述内环之间设有多个滚珠，所述外环通过多个所述滚珠能相对于所述内环转动，使卡套部33与内环相对固定，连接部15与外环能相对卡套部33与内环转动，以便于手握操作手柄30的同时调整持针方向。In an embodiment, as shown in FIG. 5, the
进一步的，所述操作手柄30的外周壁、所述旋转调节部13的外周壁和所述活接头16的外周壁均设有防滑网纹，以增加医生操作过程中的摩擦力，防止手术过程中医生手滑而使其跌落或无法调节方向，避免造成安全事故，其中，防滑网纹可为两侧带有对称弯折结构的V型结构，且其边长可以为0.75mm～0.85mm，或者防滑网纹可以为方格状、三角格状等。Further, the outer peripheral wall of the
进一步的，如图1和图2所示，所述旋转调节部13与所述连接部15之间设有密封圈14，以配合实现二者之间的密封，避免液体等进入缝隙滋生细菌，并保证转动顺畅，防止转动过程中对部件的磨损，特别是打滑后转动过程中出现的磨损，即连接部15与旋转调节部13之间紧密的挤压着密封圈14，且旋转调节部13与内套管20之间相固设，连接部15与内套管20之间相固设，较佳的，密封圈14由橡胶制成，当然，也可不设置密封圈，而是直接将旋转调节部13的后端与连接部15的前端相连，在此不做限制。Further, as shown in FIG. 1 and FIG. 2, a sealing
进一步的，所述操作手柄30的内壁设有内螺纹，所述卡套部33的外壁设有外螺纹，所述操作手柄30与所述卡套部33螺纹连接，既实现了操作手柄30与卡套部33之间的固定，便于通过卡套部33实现与活接头16的连接，又能通过调整操作手柄30与卡套部33的螺接长度，实现对操作手柄30长度的调整，进而便于医生手术操作时调整手术持针器的整体长度，以适应各种特殊情况的应用。Further, the inner wall of the
如图2和图3所示，所述内套管20包括锥部21和筒部22，所述锥部21的内径小于所述筒部22的内径，所述外管针24的后端固设于所述锥部21内，所述按压体27能移动的设于所述筒部22内，所述按压体27与所述筒部22的前端面之间设有所述弹簧26，所述弹簧26与所述筒部22的前端面固设相连，具体的，内套管20的锥部21自前至后渐扩，锥部21内设有等径通孔，锥部21的通孔与外套管10的开孔轴线相对，筒部22内也设有等径通孔，筒部22与锥部21之间设有过渡的锥形孔，锥部21紧密的卡设于外套管10的锥筒部11的前端并与锥筒部11的前端面相抵接，外管针24的后端过盈配合的穿设固定于锥部21的通孔内并自外套管10的开孔穿出，即内套管20的锥部21和外套管10的锥筒部11用于固定和导向外管针24，并保证外管针24与内管针25的配合程度，筒部22紧密穿设于外套管10的锥筒部11的后端(即二者为过盈配合)，且筒部22与外套管10的旋转调节部13固设相连，且筒部22同时与外套管10的连接部15固设相连，按压体27的前端面固设内管针25的后端，同时固设弹簧26的后端，使弹簧26的前端固设于筒部22的前端面处，且使内管针25穿过弹簧26并穿设于外管 针24内，其中内管针25的长度大于外管针24的长度，在没有按下按压开关31时，内管针25位于外管针24内部而不会伸出外管针24，在按下按压开关31后，内管针25才会伸出外管针24。As shown in FIGS. 2 and 3, the
进一步的，如图2和图3所示，所述内套管20还包括限位部23，所述限位部23设于所述筒部22的后端，所述限位部23径向向内凸设缩颈部231，所述按压体27的后端设有行程杆281，所述行程杆281上套设行程盘282，所述行程盘282位于所述缩颈部231远离所述按压体27的一侧，所述行程盘282的外径大于所述缩颈部231的内径，具体的，限位部23可固设于连接部15内，其中，限位部23的外径大于内套管20的筒部22的外径，外套管10的连接部15内设有周向凹槽，限位部23对应卡设于连接部15的周向凹槽内，实现二者的相对固定，且使内套管20实现轴向定位，或者，限位部23的外径等于内套管20的筒部22的外径，限位部23与连接部15之间通过键连接，缩颈部231可为周向等间隔凸设于限位部23内壁的凸块、半球或弧坡，也可为周向凸设于限位部23内壁的周向凸块，行程杆281大体呈圆杆状，其外径小于按压体27的外径且小于缩颈部231的内径，行程杆281的前端与按压体27的后端相连，行程盘282大体呈圆盘状，其外径等于按压体27的外径、且等于限位部23的内径(除缩颈部外的位置)、且大于缩颈部231的内径，行程盘282在行程杆281的带动下同步轴向移动，并通过缩颈部231实现轴向限位，另外，也可将限位部23的前后两端分别卡设于连接部15的周向凹槽内，内套管20的筒部22的后端与限位部23的前端相抵接，行程杆281轴向移动的穿设于限位部23内。Further, as shown in FIG. 2 and FIG. 3, the
在使用中，缩颈部231能控制轴向位移，其是通过控制行程盘282的行程和按压体27的行程实现位移控制的，即按压体27在按压开关31作用下向前运动时，行程盘282抵接至缩颈部231的后端时为最大位置，也即内管针25能伸出的最大位置，按压体27在向后运动回位时，按压体27的后端面抵接至缩颈部231的前端时为初始位置，也即内管针25完全位于外管针24内，最大位置与初始位置之间的行程距离即为内管针25的最大行程，也即为行程盘282的最大行程(行程盘282的最大行程也即为其初始位置至行程盘282抵接于缩颈部231处的最大位置之间的距离)，较佳的，所述行程盘282的最大行程为0.5mm～1.5mm，当然，也可根据实际需要，设置合适的行程。In use, the
更进一步的，如图2和图3所示，所述按压开关31枢接于所述操作手柄30的外壁，所述按压开关31的下方设有径向伸入所述操作手柄30内的联动块32，所述行程杆281 的后方设有顶管29，所述顶管29能移动的穿设于所述卡套部33和所述操作手柄30并与所述联动块32相抵靠，具体的，操作手柄30的前端的外壁凸设枢接轴，按压开关31能转动的枢接于枢接轴上，联动块32为长方体形，其与按压开关31分布与枢接轴的上下两侧，并能绕枢接轴同步的顺时针转动或逆时针转动，顶管29能轴向移动的穿设于连接部15、活接头16、卡套部33内，顶管29的前端与行程杆281的后端相连，顶管29的后端能穿出卡套部33的通孔并伸入操作手柄30内以与联动块32相抵靠，并能将联动块32的作用力通过行程杆281传递给按压体27，进而作用于内管针25，更具体的，顶管29的前端呈渐缩的锥筒形，且连接部15和活接头16内供顶管29穿设的位置也为相匹配的锥筒状，以限定顶管29轴向向前位移时的最大位置，且顶管29的前端的外径小于行程盘282的外径，以限定行程盘282轴向向后位移的位置。Further, as shown in FIG. 2 and FIG. 3, the
优选的，外管针24大体呈细长的针管状，所述外管针24的长度为24mm～28mm，所述外管针24的外径为0.95mm～1.05mm，所述外管针24的内径为0.75mm～0.85mm；内管针25也大体呈细长的针管状，且其长度大于外管针24的长度，所述内管针25的长度为24mm～28mm，所述内管针25的外径为0.9mm～1mm，所述内管针25的内径为0.7mm～0.8mm，以通过按压开关31并在按压体27的作用下伸出外管针24进行取针，并通过按压开关31和弹簧26的共同作用，实现内管针25的回针；所述内套管20和所述外套管10均由钛合金制成，具体为5级钛合金(TI-6A1-4V)，使其具有重量轻、弹性好、强度高、无磁性、不生锈的优点。Preferably, the
本发明的用于人造视网膜用钉的手术持针器在使用时，当需要使用人造视网膜用钉40时，医生手握操作手柄30，大拇指放置于按压开关31上，顺时针按下按压开关31，联动块32也顺时针转动并抵接顶管29，给顶管29施加轴向向前的作用力，顶管29通过行程杆281传递给按压体27，按压体27带动内管针25轴向向前位移，以伸出外管针24，露出卡钉口251，以通过卡钉口251卡设人造视网膜用钉40的钉头；当完成取针或完成固定后，医生可松开按压开关31，联动块32不再给顶管29施加轴向向前的作用力，在弹簧26的回复力作用下，按压体27带动内管针25轴向向后位移，以缩回外管针24内，同时按压体27推抵行程杆281、顶管29轴向后移，按压开关31逆时针转动升起，联动块32也逆时针转动；当需要调整持针方向时，医生通过另一只手转动旋转调节部13，旋转调节部13带动内套管20、外套管10及连接部15、活接头16、按压体27、内管针25和外管针24一起转动(而操作手柄30、按压开关31和卡套部33不转)，实现 卡钉口251开口方向的调节，并通过外套管10上的指示条12在周向上的方向的同步变化，实时反应卡钉口251的开口方向，便于医生从各个角度操作，特别适用于习惯左手或右手进行手术的临床眼科医生。When the surgical needle holder for the artificial retina nail of the present invention is used, when the
本发明用于人造视网膜用钉的手术持针器的特点及优点是：The features and advantages of the surgical needle holder for the artificial retina nail of the present invention are:
1、本发明通过操作手柄30上的按压开关31推动内套管20内的按压体27和固设于按压体27前端的内管针25，使内管针25能伸出外管针24，以利用内管针25前端的卡钉口251卡设人造视网膜用钉40，并通过设于按压体27与内套管20的筒部22的前端面之间的弹簧26，实现内管针25和按压体27的回位，占用空间小，操作方便，降低了手术难度，提高手术的成功率，安全性高，同时降低患者手术过程中的痛苦，提高患者舒适性。1. The present invention pushes the
2、本发明将内套管20固设于外套管10内，并将外套管10与操作手柄30能转动的相连，以通过外套管10上的旋转调节部13，实现外套管10和内套管20相对于操作手柄30同步的转动，同时通过与内套管20相连的弹簧26，带动内管针25和按压体27同步的转动，以实现内套管20的卡钉口251的圆周方向的调节，便于医生根据个人使用习惯而从各角度取钉或放钉，使用灵活，并通过在外套管10的外壁设置指示条12，且使指示条12的方向与内管针25的卡钉口251的方向相同，以通过指示条12确定内管针25的卡钉口251的开口方向，便于医生调节持针方向。2. The
最后说明的是，以上实施例仅用以说明本发明的技术方案而非限制，尽管参照较佳实施例对本发明进行了详细说明，本领域的普通技术人员应当理解，可以对本发明的技术方案进行修改或者等同替换，而不脱离本发明技术方案的宗旨和范围，其均应涵盖在本发明的权利要求范围当中。The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to be limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art Modifications or equivalents are intended to be included within the scope of the appended claims.
Claims (15)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2017/116973 WO2019119218A1 (en) | 2017-12-18 | 2017-12-18 | Needle holder for artificial retinal tack |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2017/116973 WO2019119218A1 (en) | 2017-12-18 | 2017-12-18 | Needle holder for artificial retinal tack |
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| WO2019119218A1 true WO2019119218A1 (en) | 2019-06-27 |
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| PCT/CN2017/116973 Ceased WO2019119218A1 (en) | 2017-12-18 | 2017-12-18 | Needle holder for artificial retinal tack |
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