CN107874903A - surgical needle holder for artificial retina nail - Google Patents

Abstract

The invention provides a surgical needle holder for nails for artificial retina, which comprises: an outer sleeve, an indicator bar is provided on the outer wall, an opening is provided at the front end of the outer sleeve, and a rear end of the outer sleeve and an operating handle can be rotated. Connected, the operating handle is equipped with a push switch; the inner sleeve is fixed in the outer sleeve, the front end of the inner sleeve is fixed with an outer tube needle, the outer tube needle passes through the opening of the outer sleeve, and the inner sleeve is equipped with a pressing body , the front end of the pressing body is fixed with the inner tube needle and the spring, the end of the spring away from the pressing body is fixed on the inner sleeve, the inner tube needle is sequentially passed through the spring and the outer tube needle, and the front end of the inner tube needle is provided with a clamping device. The staple opening of the staple for artificial retina, the opening direction of the staple opening is the same as the direction of the indicator bar, and the pressing body can drive the inner tube needle to move axially under the action of pressing the switch. The invention can adjust the needle holding direction, occupies little space and is convenient to operate.

Description

Surgical Needle Holder for Staples for Artificial Retina

technical field

The invention relates to the technical field of medical instruments, in particular to a surgical needle holder for artificial retina pins.

Background technique

In the process of artificial retina implantation and other operations, it is necessary to fix the micro-electrode part in the retina area through miniature artificial retinal nails, such as titanium nails. Because the size of the artificial retinal nails is very small (generally less than 10mm), it is necessary to It is performed with specialized surgical instruments.

In the prior art, the clamping operation is performed by scissor-type clamping instruments. However, this type of clamping instrument takes up a lot of space during the opening process, which is not conducive to surgical operations, and the existing clamping instruments cannot adjust the needle-holding as required. direction, the operation is difficult.

Contents of the invention

The object of the present invention is to provide a surgical needle holder for artificial retina pins, which can adjust the needle holding direction, occupies little space and is easy to operate.

Above-mentioned purpose of the present invention can adopt following technical scheme to realize:

The invention provides a surgical needle holder for nails for artificial retina, which comprises: 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 connected to the operation The handles are rotatably connected, and the operating handle is provided with a push switch; the inner sleeve is fixed in the outer sleeve, and the front end of the inner sleeve is fixed with an outer needle, and the outer needle passes through the outer sleeve. In the opening of the outer sleeve, a pressing body is arranged inside the inner sleeve, an inner tube needle and a spring are fixed at the front end of the pressing body, and the end of the spring far away from the pressing body is fixed on the inner sleeve, The inner tube needle is sequentially set in the spring and the outer tube needle, and the front end of the inner tube needle is provided with a nail hole capable of holding a nail for artificial retina, and the opening direction of the nail hole is the same as that of the outer needle. The directions of the indicator strips are the same, and the pressing body can drive the inner tube needle to move axially under the action of the pressing switch.

In a preferred embodiment, the front end of the inner tube needle is semi-cylindrical, and the staple opening is recessed on the plane of the front end of the inner tube needle, and the shape of the staple opening is the same as that used for the artificial retina. The shape of the nail head matches that of the nail.

In a preferred embodiment, the outer sleeve includes a cone portion, a rotation adjustment portion, and a connecting portion that are sequentially sleeved on the inner sleeve, the front end of the cone portion is provided with the opening, and the cone The outer wall of the cylindrical portion protrudes from the indicator strip, the rear end of the tapered cylindrical portion is connected to the rotation adjustment portion, the front end of the operating handle is provided with a ferrule portion with a through hole, and the connecting portion is connected to the The ferrule parts are rotatably connected through a joint.

In a preferred embodiment, the joint is detachably spliced by two semicircular pipes, the front end of the joint is threadedly connected to the connecting part, and the rear end of the joint is provided with an inner card slot. The front end of the ferrule part is provided with an outer buckle, and the outer buckle cooperates with the inner buckle with a gap capable of relative rotation.

In a preferred embodiment, the joint includes an outer ring connected to the connection part and an inner ring connected to the ferrule part, a plurality of balls are arranged between the outer ring and the inner ring, The outer ring can rotate relative to the inner ring through the plurality of balls.

In a preferred embodiment, the outer peripheral wall of the operating handle, the outer peripheral wall of the rotation adjustment part and the outer peripheral wall of the joint are all provided with anti-slip texture.

In a preferred embodiment, a sealing ring is provided between the rotation adjusting part and the connecting part.

In a preferred embodiment, the inner wall of the operating handle is provided with internal threads, the outer wall of the ferrule is provided with external threads, and the operating handle is threadedly connected with the ferrule.

In a preferred embodiment, the inner cannula includes a tapered portion and a cylindrical portion, the inner diameter of the tapered portion is smaller than the inner diameter of the cylindrical portion, the rear end of the outer tube needle is fixed in the tapered portion, the The pressing body is provided in the cylinder part so as to be movable, the spring is arranged between the pressing body and the front end surface of the cylinder part, and the spring is fixedly connected to the front end surface of the cylinder part.

In a preferred embodiment, the inner sleeve further includes a limiting portion, the limiting portion is arranged at the rear end of the barrel portion, and the limiting portion protrudes radially inward to form a constricted portion, the limiting portion The rear end of the pressing body is provided with a travel rod, and a travel disc is sleeved on the travel rod. The travel disc is located on the side of the constriction part away from the pressing body. The inner diameter of the neck.

In a preferred embodiment, the push switch is pivotally connected to the outer wall of the operating handle, a linkage block extending radially into the operating handle is provided under the push switch, and a linkage block is provided behind the travel lever. A jacking pipe, the jacking pipe is movably passed through the ferrule part and the operating handle and abuts against the linkage block.

In a preferred embodiment, the maximum stroke of the stroke disc is 0.5mm-1.5mm.

In a preferred embodiment, the length of the outer tube needle is 24 mm to 28 mm, the outer diameter of the outer tube needle is 0.95 mm to 1.05 mm, and the inner diameter of the outer tube needle is 0.75 mm to 0.85 mm.

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

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

The characteristics and advantages of the surgical needle holder for artificial retina nails of the present invention are:

1. The present invention pushes the pressing body in the inner cannula and the inner needle fixed at the front end of the pressing body through the pressing switch on the operating handle, so that the inner needle can extend out of the outer needle, so as to use the nail mouth at the front end of the inner needle The artificial retina is provided with nails, and the return of the inner tube needle and the pressing body is realized through the spring arranged between the pressing body and the front end of the barrel of the inner tube needle, which occupies less space, is convenient to operate, and reduces the difficulty of the operation. Improve the success rate of the operation, high safety, reduce the pain of the patient during the operation, and improve the comfort of the patient.

2. In the present invention, the inner sleeve is fixed in the outer sleeve, and the outer sleeve is rotatably connected with the operating handle, so that the outer sleeve and the inner sleeve can rotate synchronously with respect to the operating handle through the rotation adjustment part on the outer sleeve. At the same time, through the spring connected with the inner sleeve, the inner tube needle and the pressing body are driven to rotate synchronously, so as to realize the adjustment of the circumferential direction of the staple opening of the inner sleeve, which is convenient for the doctor to take the nails or nails from various angles according to personal usage habits. Nail placement, flexible use, and by setting an indicator strip on the outer wall of the outer casing, and making the direction of the indicator strip the same as the direction of the staple opening of the inner tube needle, the opening direction of the staple opening of the inner tube needle can be determined by the indicator strip , which is convenient for doctors to adjust the needle holding direction.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

Fig. 1 is a schematic diagram of the front view of the surgical needle holder for artificial retina pins according to the present invention.

Fig. 2 is a schematic cross-sectional structure diagram of the surgical needle holder used for artificial retina pins according to the present invention.

Fig. 3 is a schematic structural view of the inner sleeve of the surgical needle holder used for artificial retina pins according to the present invention.

FIG. 4 is a schematic diagram of a partially enlarged structure of part A in FIG. 3 .

Fig. 5 is a schematic cross-sectional structure diagram of an embodiment of the union and ferrule part of the present invention.

Explanation of reference numbers:

10. Outer casing; 11. Cone barrel part; 12. Indicator bar; 13. Rotation adjustment part; 14. Sealing ring; 15. Connection part; 16. Union joint;

20. Inner casing; 21. Cone part; 22. Barrel part; 23. Limit part; 231. Constriction part; 24. Outer tube needle; 25. Inner tube needle; 251. Staple mouth; 26. Spring; 27. Pressing body; 281. Travel rod; 282. Travel disc; 29. Jacking pipe;

30. Operating handle; 31. Push switch; 32. Linkage block; 33. Ferrule part;

40. Nails for artificial retina.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Except for the directions indicated by individual definitions, the directions of front, back, up, and down referred to herein are based on the directions of left, right, up, and down in Fig. 1 shown in the present invention, and are hereby incorporated illustrate.

As shown in Fig. 1 to Fig. 5, the present invention provides a kind of surgical needle holder that is used for artificial retina pin, and it comprises: Outer sleeve 10, its outer wall is provided with indicator bar 12, and the front end of described outer sleeve 10 is provided with Holes are opened, and the rear end of the outer sleeve 10 is rotatably connected with the operating handle 30, and the operating handle 30 is provided with a push switch 31; the inner sleeve 20 is fixed in the outer sleeve 10, and the The front end of the inner sleeve 20 is fixedly equipped with an outer tube needle 24, and the outer tube needle 24 passes through the opening of the outer sleeve 10, and the inner sleeve 20 is provided with a pressing body 27, and the front end of the pressing body 27 An inner tube needle 25 and a spring 26 are fixed, and the end of the spring 26 away from the pressing body 27 is fixed on the inner sleeve 20, and the inner tube needle 25 is sequentially passed through the spring 26 and the outer tube. Inside the tube needle 24, the front end of the inner tube needle 25 is provided with a staple opening 251 capable of clamping the artificial retina staple 40, the opening direction of the staple opening 251 is the same as the direction of the indicator strip 12, and the The pressing body 27 can drive the inner tube needle 25 to move axially under the action of the pressing switch 31 .

Specifically, the outer sleeve 10 is generally tubular, and is used to accommodate and protect the inner sleeve 20, and is used to provide an indicator strip 12 for indicating the needle holding direction and a rotation adjustment part 13 for adjusting the needle holding direction, wherein the staple The opening direction of the mouth 251 and the direction of the indicator strip 12 both refer to the angular direction along the circumference. 10. The direction of the angle in the circumferential direction, that is, the opening direction of the staple opening 251 is the same as that of the indicator strip 12 in the circumferential direction, so that the opening direction of the staple opening 251 can be known through 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 groove 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 it in the shape of a long rod. It is hollow to reduce the operator's load. The push switch 31 on it is set at a position convenient for the thumb to press. Preferably, it is set at the operating handle 30 connected to the ferrule 33, press the switch 31 to trigger the inner tube needle 25 to stretch out the outer tube needle 24, so as to clamp the artificial retina pin 40, preferably, the outer diameter of the operating handle 30 is 8.3mm; the inner sleeve 20 is also roughly It is tubular, fixed in the outer sleeve 10, and rotates synchronously with the outer sleeve 10. Preferably, the inner sleeve 20 is arranged in the outer sleeve 10 with an interference fit, or the inner sleeve 20 and the outer sleeve 10 are radially engaged. For example, keyways are provided on both the inner sleeve 20 and the outer sleeve 10, and the fixing of the two is realized by setting a key in the keyway. The inner sleeve 20 can drive the inner tube needle 25 and the pressing body 27 to rotate synchronously through the spring 26. , the inner sleeve 20 can also move the pressing body 27 axially forward under the action of the push switch 31, and drive the inner tube needle 25 to move axially forward synchronously, so that the front end of the inner tube needle 25 protrudes outward. The tube needle 24, and expose the staple opening 251 at the front end of the inner tube needle 25, so as to clamp the staple 40 for the artificial retina.

Further, as shown in FIG. 4, the front end of the inner tube needle 25 is semi-cylindrical, and the staple opening 251 is recessed on the plane of the front end of the inner tube needle 25. The shape of the staple opening 251 is Matches the shape of the nail head of the artificial retina pin 40. Specifically, the inner tube needle 25 is generally tubular to reduce weight and facilitate the use of doctors. Of course, the inner tube needle 25 can also be solid columnar. The front end of 25 is semi-cylindrical, so that the front end of inner tube needle 25 has a curved surface and a plane, and a nail opening matching the shape of the nail head of the artificial retina nail 40 is recessed on the plane near the edge of the front end. 251, the size of the nail mouth 251 can be slightly smaller than the size of the nail head of the artificial retina pin 40, so as not to affect the clamping setting, so as to avoid the artificial retina pin 40 from falling off, of course, the inner tube needle 25 can also be integrally Solid semi-cylindrical or hollow semi-cylindrical tubular, not limited here, the nail 40 for artificial retina can be titanium nail, and its nail head is sphere, cone, ellipsoid, prism and cylinder etc., for artificial retina Matching the shape of the nail head of the nail 40, the nail opening 251 can be hemispherical, semi-conical, semi-ellipsoidal, semi-cylindrical, etc.

As shown in Figures 1 and 2, the outer sleeve 10 includes a cone portion 11, a rotation adjustment portion 13, and a connecting portion 15 that are sequentially sleeved on the inner sleeve 20, and the front end of the cone portion 11 is provided with 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 adjustment portion 13, and the front end of the operating handle 30 is provided with a through The ferrule part 33 of the hole, the connecting part 15 and the ferrule part 33 are rotatably connected through the joint 16, specifically, the tapered cylindrical part 11 of the outer sleeve 10 includes a tapered part at the front end and a cylindrical part at the rear end, The taper gradually expands from front to back, and the inner diameter of the opening matches the outer diameter of the outer tube needle 24, so that the outer tube needle 24 is stably inserted in the opening and kept fixed. The indicator strip 12 is generally in the shape of a long strip. It extends axially and protrudes radially on the outer wall of the cone portion 11, wherein the opening direction of the staple opening 251 is the same as the protruding direction of the indicator strip 12, that is, both are radially outward, and the two axes are co-linear (that is, the central axes of the two are collinear), to indicate the opening direction of the staple mouth 251, the rear end of the cone portion 11 is connected to the front end of the rotation adjustment portion 13, and the two can be connected by welding, or integrally formed, to ensure The two rotate synchronously, and the rotation adjustment part 13 is generally cylindrical and fixed with the cylindrical part 22 of the inner sleeve 20 to ensure that the two rotate synchronously. The two can be interference fit, or radial clamping, such as through a keyway In addition, the rotation adjustment part 13 can also be a nut, and the outer wall of the inner casing 20 is provided with threads, and the rotation adjustment part 13 is screwed to the inner casing 20, so that the inner casing 20 is tightly connected with the outer casing 10, and its tightness The fixing direction is the same as the direction of adjusting the needle holding, so as to avoid loosening when adjusting the needle holding. The connecting part 15 is generally cylindrical and fixed with the cylindrical part 22 of the inner sleeve 20. For example, the connecting part 15 is tightly locked in the inner The rear end of the sleeve 20, that is, the two can be interference fit, or the two can be radially clamped, for example, radially clamped by a key, so as to ensure that the connecting part 15 and the inner sleeve 20 rotate synchronously.

In one embodiment, as shown in FIG. 5 , the joint 16 is formed by detachable splicing of two semicircular pipes, and the front end of the joint 16 is screwed to the connecting part 15 so that the two can be synchronized. Rotate, the rear end of the joint 16 is provided with an inner card slot, the front end of the ferrule part 33 is provided with an outer buckle, and the outer buckle and the inner card slot can be rotated relative to each other, specifically , the cross-sectional shape of the inner groove of the joint 16 is generally two axially superimposed trapezoids, and the cross-sectional shape of the outer buckle of the ferrule part 33 is also generally two circumferentially superimposed trapezoids, so that the outer buckle is arranged on the After the inner card groove is inside, it can axially limit the position to prevent the ferrule part 33 from coming out. At the same time, because the two are clearance fit, when the outer sleeve 10 and the inner sleeve 20 rotate, the joint 16 can be connected with the outer sleeve 10 and the inner sleeve. Sleeve 20 rotates relative to operating handle 30 and card sleeve part 33 together, so as to adjust the direction of holding the needle while holding operating handle 30, wherein, when installing, the two semicircular tubes of union 16 are sleeved on the card respectively. The sleeve part 33, and realize the fixation of the two semicircular pipes of the joint 16 by connecting pieces such as bolts, and then screwed with the connecting part 15. In another embodiment, the joint 16 includes an outer ring connected to the connecting part 15 and an inner ring connected to the ferrule part 33, and multiple rings are arranged between the outer ring and the inner ring. The outer ring can rotate relative to the inner ring through a plurality of balls, so that the ferrule part 33 and the inner ring are relatively fixed, and the connecting part 15 and the outer ring can rotate relative to the ferrule part 33 and the inner ring. In order to adjust the needle holding direction while holding the operating handle 30 .

Further, the outer peripheral wall of the operating handle 30, the outer peripheral wall of the rotation adjustment part 13 and the outer peripheral wall of the joint 16 are all provided with anti-slip textures, so as to increase the friction force during the operation of the doctor and prevent the operation process from The Chinese doctor's hand slips and makes it fall or cannot adjust the direction to avoid safety accidents. Among them, the anti-slip texture can be a V-shaped structure with symmetrical bending structures on both sides, and its side length can be 0.75mm to 0.85mm. Alternatively, the anti-slip texture can be in the shape of a grid, a triangle, or the like.

Further, as shown in FIG. 1 and FIG. 2 , a sealing ring 14 is provided between the rotation adjustment part 13 and the connecting part 15 to cooperate to realize the sealing between the two, so as to prevent liquids and the like from entering the gap to breed bacteria. And ensure smooth rotation, prevent wear and tear on parts during rotation, especially the wear and tear that occurs during rotation after slipping, that is, the sealing ring 14 is tightly squeezed between the connecting part 15 and the rotation adjustment part 13, and the rotation adjustment part 13 It is fixed with the inner casing 20, and is fixed with the connecting part 15 and the inner casing 20. Preferably, the sealing ring 14 is made of rubber. Of course, the sealing ring may not be provided, but the rotating The rear end of the adjusting part 13 is connected to the front end of the connecting part 15, which is not limited here.

Further, the inner wall of the operating handle 30 is provided with internal threads, the outer wall of the ferrule part 33 is provided with external threads, and the operating handle 30 is threadedly connected with the ferrule part 33, which realizes the connection between the operating handle 30 and the ferrule part 33. The fixing between the ferrule parts 33 is convenient to realize the connection with the joint 16 through the ferrule parts 33, and the adjustment of the length of the operating handle 30 can be realized by adjusting the screw connection length between the operating handle 30 and the ferrule part 33, and then It is convenient for doctors to adjust the overall length of the surgical needle holder during operation, so as to adapt to the application of various special situations.

As shown in Figures 2 and 3, the inner sleeve 20 includes a tapered portion 21 and a cylindrical portion 22, the inner diameter of the tapered portion 21 is smaller than the inner diameter of the cylindrical portion 22, and the rear end of the outer tube needle 24 is fixed. Located in the cone portion 21, the pressing body 27 is movably disposed in the cylindrical portion 22, and the spring 26 is arranged between the pressing body 27 and the front end surface of the cylindrical portion 22, so that The spring 26 is fixedly connected to the front end surface of the cylindrical portion 22. Specifically, the tapered portion 21 of the inner sleeve 20 gradually expands from front to back, and the tapered portion 21 is provided with an equal-diameter through hole. The through hole of the tapered portion 21 Opposite to the opening axis of the outer sleeve 10, the cylindrical portion 22 is also provided with an equal-diameter through hole, and a transitional tapered hole is provided between the cylindrical portion 22 and the tapered portion 21, and the tapered portion 21 is tightly clamped on the outer sleeve 10 The front end of the tapered tube part 11 is in contact with the front end surface of the tapered tube part 11, and the rear end of the outer tube needle 24 is inserted and fixed in the through hole of the tapered part 21 through an interference fit and pierced through the opening of the outer tube 10. That is, the cone portion 21 of the inner sleeve 20 and the cone portion 11 of the outer sleeve 10 are used to fix and guide the outer needle 24, and ensure the degree of cooperation between the outer needle 24 and the inner needle 25, and the cylinder portion 22 is tightly worn. It is located at the rear end of the tapered tube part 11 of the outer tube 10 (that is, the two are interference fit), and the tube part 22 is fixedly connected with the rotation adjustment part 13 of the outer tube 10, and the tube part 22 is connected with the outer tube 10 at the same time. The connecting part 15 is fixedly connected, and the front end of the pressing body 27 is fixed to the rear end of the inner tube needle 25, and the rear end of the spring 26 is fixed at the same time, so that the front end of the spring 26 is fixed on the front end of the cylinder part 22, and the The inner tube needle 25 passes through the spring 26 and is installed in the outer tube needle 24, wherein the length of the inner tube needle 25 is greater than the length of the outer tube needle 24. When the push switch 31 is not pressed, the inner tube needle 25 is positioned at the outer tube needle. 24 inside and can not stretch out outer pipe needle 24, after pressing push switch 31, inner pipe needle 25 just can stretch out outer pipe needle 24.

Further, as shown in FIG. 2 and FIG. 3 , the inner sleeve 20 also includes a limiting portion 23, which is arranged at the rear end of the cylindrical portion 22, and the limiting portion 23 is radially A constriction portion 231 is protruded inward, a stroke rod 281 is provided at the rear end of the pressing body 27, and a travel disc 282 is sleeved on the travel rod 281, and the travel disc 282 is located at the constriction portion 231 away from the On one side of the pressing body 27, the outer diameter of the stroke plate 282 is greater than the inner diameter of the constricted portion 231. Specifically, the limiting portion 23 can be fixed in the connecting portion 15, wherein the outer diameter of the limiting portion 23 Greater than the outer diameter of the cylindrical portion 22 of the inner sleeve 20, a circumferential groove is provided in the connecting portion 15 of the outer sleeve 10, and the limiting portion 23 is correspondingly clamped in the circumferential groove of the connecting portion 15 to realize relative fixing of the two, and Make the inner sleeve 20 achieve axial positioning, or the outer diameter of the limiting part 23 is equal to the outer diameter of the cylindrical part 22 of the inner sleeve 20, the limiting part 23 and the connecting part 15 are connected by a key, and the constricted part 231 It can be convex blocks, hemispheres or arc slopes protruding on the inner wall of the limiting part 23 at equal intervals in the circumferential direction, or can be a circumferential protrusion protruding on the inner wall of the limiting part 23 in the circumferential direction. The stroke rod 281 is generally in the shape of a round rod , its outer diameter is smaller than the outer diameter of the pressing body 27 and smaller than the inner diameter of the constricted portion 231, the front end of the stroke rod 281 is connected with the rear end of the pressing body 27, the stroke disc 282 is generally disc-shaped, and its outer diameter is equal to the pressing body 27 and is equal to the inner diameter of the stopper 23 (positions other than the constricted portion), and greater than the inner diameter of the constricted portion 231, the travel disc 282 is driven by the travel rod 281 to move axially synchronously, and through the constricted part 231 realizes the axial limit. In addition, the front and rear ends of the limit part 23 can also be clamped in the circumferential groove of the connecting part 15 respectively. The front ends are in contact with each other, and the travel rod 281 is axially movable and penetrates in the limiting portion 23 .

In use, the constriction portion 231 can control the axial displacement, and it realizes displacement control by controlling the stroke of the stroke plate 282 and the stroke of the pressing body 27, that is, when the pressing body 27 moves forward under the action of the pressing switch 31, the stroke When the disk 282 abuts against the rear end of the constriction portion 231, it is at the maximum position, that is, the maximum position at which the inner tube needle 25 can be stretched out. The front end of the neck 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 stroke plate 282 (the maximum stroke of the stroke plate 282 is also the distance between its initial position and the maximum position where the stroke plate 282 abuts against the constriction portion 231), preferably, the maximum stroke of the stroke plate 282 is 0.5mm～1.5mm, of course, you can also set a suitable stroke according to actual needs.

Furthermore, as shown in FIG. 2 and FIG. 3 , the push switch 31 is pivotally connected to the outer wall of the operating handle 30 , and a linkage that extends radially into the operating handle 30 is provided below the push switch 31 . Block 32, the rear of the stroke rod 281 is provided with a jacking tube 29, the jacking tube 29 can move through the ferrule 33 and the operating handle 30 and abut against the linkage block 32, specifically Yes, the outer wall of the front end of the operating handle 30 is protrudingly provided with a pivot shaft, and the push switch 31 is rotatably pivotally connected to the pivot shaft. , and can rotate clockwise or counterclockwise synchronously around the pivot shaft. The jacking pipe 29 can move axially through the connection part 15, the joint 16, and the ferrule part 33. The front end of the jacking pipe 29 and the stroke rod 281 connected to the rear end, the rear end of the jacking pipe 29 can pass through the through hole of the ferrule part 33 and extend into the operating handle 30 to abut against the linkage block 32, and the force of the linkage block 32 can be passed through the stroke rod 281 It is transmitted to the pressing body 27, and then acts on the inner tube needle 25. More specifically, the front end of the jacking tube 29 is in the shape of a tapered cone, and the position for the jacking tube 29 to pass through the connecting part 15 and the union 16 is also Matching cone shape, to limit the maximum position when the jack pipe 29 axially moves forward, and the outer diameter of the front end of the jack pipe 29 is smaller than the outer diameter of the travel disc 282, to limit the axial displacement of the travel disc 282 Location.

Preferably, the outer tube needle 24 is generally in the shape of a slender needle tube. The inner diameter of the inner tube needle 25 is 0.75mm-0.85mm; the inner tube needle 25 is also generally in the shape of a slender needle tube, and its length is greater than the length of the outer tube needle 24, and the length of the inner tube needle 25 is 24mm-28mm. The outer diameter of the needle 25 is 0.9 mm to 1 mm, and the inner diameter of the inner tube needle 25 is 0.7 mm to 0.8 mm, so that the needle can be taken out by pressing the switch 31 and extending the outer tube needle 24 under the action of the pressing body 27, and passing The combined action of the push switch 31 and the spring 26 realizes the needle return of the inner tube needle 25; the inner sleeve 20 and the outer sleeve 10 are both made of titanium alloy, specifically grade 5 titanium alloy (TI-6A1-4V ), so that it has the advantages of light weight, good elasticity, high strength, non-magnetic, and no rust.

When the surgical needle holder for artificial retina pins of the present invention is in use, when the artificial retina pins 40 need to be used, the doctor holds the operating handle 30, puts the thumb on the push switch 31, and presses the push switch clockwise 31, the linkage block 32 also rotates clockwise and abuts against the jacking pipe 29, exerting an axial forward force on the jacking pipe 29, and the jacking pipe 29 is transmitted to the pressing body 27 through the stroke rod 281, and the pressing body 27 drives the inner pipe needle 25 Axially move forward to extend the outer tube needle 24 to expose the staple opening 251, so as to set the nail head of the artificial retina staple 40 through the staple opening 251; when the needle removal or fixation is completed, the doctor can release the pressure The switch 31 and the linkage block 32 no longer exert an axial forward force on the jacking tube 29. Under the restoring force of the spring 26, the pressing body 27 drives the inner tube needle 25 to move axially backward to retract the outer tube needle 24, at the same time, the pressing body 27 pushes against the stroke rod 281, and the jacking tube 29 moves back axially, the pressing switch 31 rotates counterclockwise and rises, and the linkage block 32 also rotates counterclockwise; when it is necessary to adjust the needle holding direction, the doctor passes another Rotate the rotary adjustment part 13 with only one hand, and the rotary adjustment part 13 drives the inner casing 20, the outer casing 10 and the connection part 15, the movable joint 16, the pressing body 27, the inner tube needle 25 and the outer tube needle 24 to rotate together (while the operating handle 30 , press the switch 31 and the ferrule part 33 does not turn), realize the adjustment of the opening direction of the staple mouth 251, and through the synchronous change of the direction of the indicator bar 12 on the outer sleeve 10 in the circumferential direction, the opening of the staple mouth 251 is reflected in real time It is convenient for doctors to operate from all angles, especially suitable for clinical ophthalmologists who are accustomed to operating with left or right hands.

The characteristics and advantages of the surgical needle holder for artificial retina nails of the present invention are:

1. The present invention pushes the pressing body 27 in the inner casing 20 and the inner tube needle 25 fixed at the front end of the pressing body 27 through the pressing switch 31 on the operating handle 30, so that the inner tube needle 25 can extend out of the outer tube needle 24 to utilize The nail opening 251 at the front end of the inner tube needle 25 is clamped with the staple 40 for artificial retina, and the spring 26 arranged between the pressing body 27 and the front end surface of the tube portion 22 of the inner sleeve 20 realizes the pressing of the inner tube needle 25. The return of the body 27 takes up little space, is convenient to operate, reduces the difficulty of the operation, improves the success rate of the operation, has high safety, reduces the pain of the patient during the operation, and improves the comfort of the patient.

2. In the present invention, the inner sleeve 20 is fixed in the outer sleeve 10, and the outer sleeve 10 is rotatably connected with the operating handle 30, so that the outer sleeve 10 and the inner sleeve can be realized through the rotation adjustment part 13 on the outer sleeve 10. The tube 20 rotates synchronously with respect to the operating handle 30, and at the same time, the spring 26 connected to the inner sleeve 20 drives the inner tube needle 25 and the pressing body 27 to rotate synchronously, so as to realize the circumferential direction of the staple opening 251 of the inner sleeve 20. The adjustment is convenient for the doctor to take or place the nails from various angles according to personal usage habits, and it is flexible to use, and by setting the indicator strip 12 on the outer wall of the outer tube 10, and making the direction of the indicator bar 12 consistent with the staple of the inner tube needle 25 The directions of the openings 251 are the same, so that the opening direction of the staple opening 251 of the inner tube needle 25 can be determined by the indicator strip 12, so that the doctor can adjust the direction of holding the needle.

The above descriptions are only preferred embodiments of the present invention, and do not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone in the technical field has Ordinary knowledgeable persons, without departing from the scope of the technical solution of the present invention, can use the technical content disclosed above to make some changes or modify equivalent embodiments with equivalent changes, but if they do not depart from the technical solution of the present invention, according to The technical essence of the present invention Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solutions of the present invention.

Claims (15)

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

Outer tube, its outer wall are provided with bar, and the front end of the outer tube is provided with perforate, the rear end of the outer tube and manipulator What handle can rotate is connected, and the operation handle is provided with by compressing switch；

Inner sleeve, it is fixedly arranged in the outer tube, the fixed external tube needles in front end of the inner sleeve, and the external tube needles pass described The perforate of outer tube, the inner sleeve is interior to be provided with pressing body, the fixed inner tube pin in front end and spring of the pressing body, the spring One end away from the pressing body is fixedly arranged on the inner sleeve, and said inner tube pin is arranged in the spring and the external tube needles successively Interior, the front end of said inner tube pin, which is provided with, can block the bail mouth for setting artificial retina nail, the opening direction of the bail mouth and institute It is identical to state the direction of bar, the pressing physical efficiency drives said inner tube pin to move axially described by the presence of compressing switch.

2. the surgical needle holder according to claim 1 for artificial retina nail, it is characterised in that said inner tube pin 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 pin The shape for stating the ailhead of artificial retina nail matches.

3. the surgical needle holder according to claim 1 for artificial retina nail, it is characterised in that the outer tube Cone cylinder portion, rotation adjustment portion and connecting portion including being sheathed on the inner sleeve successively, the front end in the cone cylinder portion is provided with described Perforate, 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 provided with the cutting ferrule portion with through hole, the phase that the connecting portion can rotate with the cutting ferrule portion by articulation Even.

4. the surgical needle holder according to claim 3 for artificial retina nail, it is characterised in that the articulation It is spliced by what two semi-circular tubes can be dismantled, the front end of the articulation is threadedly coupled with the connecting portion, the articulation Rear end be provided with inner card cage, the front end in the cutting ferrule portion is provided with outer buckle, and the outer buckle can relatively rotate with the inner card cage Gap coordinate.

5. the surgical needle holder according to claim 3 for artificial retina nail, it is characterised in that the articulation Including the outer shroud being connected with the connecting portion and the inner ring being connected with the cutting ferrule portion, it is provided between the outer shroud and the inner ring Multiple balls, the outer shroud can be rotated by multiple balls relative to the inner ring.

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

7. the surgical needle holder for being used for artificial retina nail according to any one of claim 3 to 5, its feature exist In described rotate is provided with sealing ring between adjustment portion and the connecting portion.

8. the surgical needle holder for being used for artificial retina nail according to any one of claim 3 to 5, its feature exist Be provided with internal thread in the inwall of, the operation handle, the outer wall in the cutting ferrule portion is provided 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, it is characterised in that the inner sleeve Including tapering and cylinder 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 in cartridge, and institute is provided 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, it is characterised in that the inner sleeve Pipe also includes limiting section, and the limiting section is located at the rear end of cartridge, and the limiting section radially-inwardly projection necking part is described The rear end of pressing body is provided with stroke lever, and journey disk is arranged on the stroke lever, and the journey disk is located at the necking part away from institute The side of pressing body is stated, the external diameter of the journey disk is more than the internal diameter of the necking part.

11. the surgical needle holder according to claim 10 for artificial retina nail, it is characterised in that the pressing Switch is articulated in the outer wall of the operation handle, described that the connection being radially into the operation handle is provided with by the lower section to compress switch Motion block, the rear of the stroke lever are provided with push pipe, and the push pipe is mobile to be arranged in the cutting ferrule portion and the operation handle And leant with the linkage block.

12. the surgical needle holder according to claim 10 for artificial retina nail, it is characterised 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, it is characterised in that the outer tube The length of pin is 24mm~28mm, and the external 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, it is characterised in that said inner tube The length of pin is 24mm~28mm, and the external diameter of said inner tube pin is 0.9mm~1mm, the internal diameter of said inner tube pin for 0.7mm~ 0.8mm。

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