Silicone oil extractor

Abstract

The utility model discloses a silicone oil extractor. The silicone oil extractor comprises an injector, a driving mechanism and a base, wherein the injector comprises a cylinder body and a piston rod which does piston motion in the cylinder body; the driving mechanism drives the piston rod to do piston motion in the cylinder, and a negative pressure space is formed in the cylinder through the movement of the piston rod in the opposite direction relative to a nipple of the injector; the driving mechanism is arranged on the base, and the injector is detachably connected relative to the base. The device can be operated by a single person and ensures the stability in the silicone oil taking process.

Description

Technical Field

[0001] The utility model relates to the technical field of ophthalmic surgical instruments, in particular to a silicone oil remover. Background Art

[0002] Since Paul Cibis first successfully injected silicone oil into the eye as a vitreous substitute in 1962 to treat some patients with severe proliferative vitreoretinopathy who had no hope of being cured by conventional surgery, silicone oil has been widely used in the treatment of complex vitreous and retinal diseases, mainly for the treatment of complex ophthalmic diseases such as retinal detachment and macular epiretinal membrane. During surgery, in order to promote the reattachment of the retina, silicone oil is often injected into the eyeball. 3-6 months after surgery, when it is confirmed that the retina has been reattached or the silicone oil has emulsified, another surgery is performed to remove the silicone oil from the eye.

[0003] At present, there are two ways to remove silicone oil: machine removal and manual removal. Among them, machine removal of silicone oil mainly uses a vitrectomy and phacoemulsification machine to remove silicone oil. The startup cost is high, the tubes and instruments are complicated, the oil removal is relatively unstable and difficult to control, and in case of emergencies, it is impossible to stop the oil removal in time.

[0004] To manually remove silicone oil, a syringe and a vascular clamp are required. The surgeon uses the piston rod of the syringe to drive the piston in the syringe to move, so that negative pressure is formed in the syringe barrel. The assistant then holds the vascular clamp to clamp the piston rod to keep the position between the piston and the syringe fixed, so that a stable negative pressure is formed in the syringe, thereby sucking out the silicone oil.

[0005] However, the aspiration of the syringe and the fixation of the vascular clamp require the cooperation of at least two people, which places high demands on the coordination between the surgeon and the assistant. In addition, the assistant must always clamp the piston rod of the syringe during the silicone oil aspiration process, which is labor-intensive.

[0006] At the same time, during the manual suction of silicone oil, the piston rod needs to be manually adjusted according to the actual situation, resulting in unstable suction force, which can easily cause changes in intraocular pressure. Intraoperative unstable intraocular pressure is an important factor causing serious complications of vitrectomy, thereby increasing the risk of surgery. Utility Model Content

[0007] The purpose of the utility model is to provide a silicone oil extractor, which can be operated by one person and ensures stability during the silicone oil extraction process, so as to solve the technical problems in the prior art.

[0008] In order to solve the above technical problems, the utility model specifically provides the following technical solutions: a silicone oil extractor, comprising:

[0009] A syringe, comprising a barrel and a piston rod that performs piston motion inside the barrel;

[0010] The driving mechanism drives the piston rod to perform piston motion inside the barrel, and forms a negative pressure space inside the barrel by moving the piston rod in the opposite direction relative to the nipple of the syringe;

[0011] The base is provided with the driving mechanism on the base, and the syringe is detachably connected with respect to the base.

[0012] Furthermore, the base is a cylindrical structure, a through hole is provided on the axial position of the base, and the syringe is arranged in the through hole.

[0013] Furthermore, the inner side of the through hole is covered with a rubber layer, and the sleeve formed by the rubber layer is interference fit with the cylinder.

[0014] Furthermore, the driving mechanism includes a motor and a ball screw pair; the ball screw pair is arranged parallel to the piston rod, the ball nut of the ball screw pair is connected to the piston rod through a connecting piece, and the connecting piece is detachably connected to the piston rod; the motor drives the screw of the ball screw pair to rotate;

[0015] It also includes a storage battery and a momentary switch; the storage battery, the momentary switch and the motor form a series circuit;

[0016] The motor, the ball screw pair, the storage battery and the inching switch are arranged on the side wall of the base.

[0017] Furthermore, the driving mechanism further comprises a housing, the motor, the ball screw pair, and the battery are arranged in the housing, a hole is arranged on the side wall of the housing, the connecting member passes through the hole, and the inching switch is arranged on the outer side wall of the housing;

[0018] The shell is arranged on the side wall of the base.

[0019] Furthermore, the motor and the screw of the ball screw pair are connected via a reduction gear set.

[0020] Furthermore, the connecting member includes an L-shaped connecting rod and a clamping structure; the L-shaped connecting rod is formed by a first connecting rod and a second connecting rod arranged vertically, wherein the first connecting rod is arranged parallel to the screw of the ball screw pair, the first connecting rod passes through the housing, the end of the first connecting rod is connected to the ball nut of the ball screw pair, the second connecting rod is located outside the housing, and the clamping structure is arranged at the end of the second connecting rod;

[0021] The clamping structure is used to fix the piston rod.

[0022] Furthermore, the clamping structure includes an articulated seat and two symmetrically arranged clamping handles, the clamping handles are hinged relative to the articulated seat, and the ends of the two clamping handles are fixed by first bolts;

[0023] The end of the piston rod located outside the cylinder body is provided with a piston handle, the piston handle is a disc structure, the clamping handle is an arc structure, the inner circle of the clamping handle is provided with a notch along the horizontal plane, and the edge of the piston handle can be stuck in the notch.

[0024] Furthermore, two baffles are symmetrically arranged at the mouth of the cylinder perpendicular to the main body and facing outward;

[0025] The base is provided with an inner groove having the same shape as the baffle at a position corresponding to the baffle, and the depth of the inner groove is consistent with the thickness of the baffle;

[0026] The base is provided with a cover plate at the side position where the inner groove is arranged, and the cover plate is fixed on the base by a second bolt.

[0027] Compared with the prior art, the utility model has the following beneficial effects: a ball screw pair is used to pull the piston rod to form a negative pressure in the cylinder, so that the silicone oil is sucked into the cylinder, so that the surgeon can apply suction force continuously and stably to extract the silicone oil; a momentary switch is used for control, and if an emergency occurs during the silicone oil extraction process, the oil extraction is stopped in time; the labor intensity is reduced, and the surgical risk is also reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0029] Figure 1 This is a schematic diagram of the structure of the silicone oil extractor of this application;

[0030] Figure 2 This is a schematic structural diagram of one embodiment of the silicone oil extractor of the present application;

[0031] Figure 3 It is a structural schematic diagram of the driving mechanism in this application;

[0032] Figure 4 It is a schematic diagram of the structure of the clamping structure in this application;

[0033] Figure 5 It is a schematic diagram of the structure of the cover plate in this application.

[0034] The numbers in the figure represent the following:

[0035] 1-syringe, 11-cylinder, 12-piston rod, 13-piston handle, 14-baffle;

[0036] 2-driving mechanism, 21-motor, 22-ball screw pair, 23-connector, 24-battery, 25-jog switch, 26-housing, 27-reduction gear set, 28-hole;

[0037] 231 - first connecting rod, 232 - second connecting rod, 233 - clamping structure, 234 - hinge seat, 235 - clamping handle, 236 - notch, 237 - first bolt;

[0038] 3-base, 31-through hole, 32-rubber layer, 33-inner groove, 34-cover plate, 35-second bolt. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] like Figure 1 As shown, the utility model provides a silicone oil extractor, including a syringe 1, a driving mechanism 2 and a base 3. The syringe 1 includes a barrel 11 and a piston rod 12 that performs piston motion inside the barrel 11; the driving mechanism 2 drives the piston rod 12 to perform piston motion inside the barrel 11, and a negative pressure space is formed inside the barrel 11 by the piston rod 12 moving in the opposite direction relative to the nipple of the syringe 1; the driving mechanism 2 is arranged on the base 3 to form an integral structure, and the syringe 1 is detachably connected relative to the base 3. When in use, the syringe is first installed on the base, and then the driving member of the driving mechanism is connected to the piston rod of the syringe; after taking out the silicone oil, the syringe is removed, and the base and the driving mechanism can be used repeatedly as a whole.

[0041] like Figure 3As shown, the driving mechanism 2 includes a motor 21 and a ball screw pair 22; the ball screw pair 22 is arranged parallel to the piston rod 12, and the ball nut of the ball screw pair 22 is connected to the piston rod 12 through a connecting piece 23, and the connecting piece 23 is detachably connected to the piston rod 12; the motor 21 drives the screw of the ball screw pair 22 to rotate; it also includes a battery 24 and a momentary switch 25; the battery 24, the momentary switch 25 and the motor 21 form a series circuit; the motor 21, the ball screw pair 22, the battery 24 and the momentary switch 25 are arranged on the side wall of the base 3. The ball screw pair drives the piston rod of the syringe to make a piston movement in the barrel through the connecting piece, so that the piston rod moves at a uniform speed, ensuring that the suction force remains unchanged during the process of taking silicone oil, and avoiding changes in intraocular pressure during the process of taking silicone oil; the momentary switch is used, and the oil can be stopped in time if an emergency occurs during the process of sucking silicone oil.

[0042] The drive mechanism 2 further includes a housing 26, in which the motor 21, the ball screw pair 22, and the battery 24 are arranged. A hole 28 is arranged on the side wall of the housing 26, through which the connecting member 23 passes, and the inching switch 25 is arranged on the outer side wall of the housing 26; the housing 26 is arranged on the side wall of the base 3. The housing protects the components of the drive mechanism.

[0043] The motor 21 and the lead screw of the ball screw pair 22 are connected via a reduction gear set 27, so that the lead screw of the ball screw pair can rotate at a low speed and slowly absorb the silicone oil to avoid excessive suction force generated by the syringe.

[0044] The connecting member 23 includes an L-shaped connecting rod and a clamping structure 233; the L-shaped connecting rod is composed of a first connecting rod 231 and a second connecting rod 232 which are vertically arranged, wherein the first connecting rod 231 is arranged parallel to the screw of the ball screw pair 22, the first connecting rod 231 passes through the housing 26, the end of the first connecting rod 231 is connected to the ball nut of the ball screw pair 22, the second connecting rod 232 is located on the outside of the housing 26, and the clamping structure 233 is arranged at the end of the second connecting rod 232; the clamping structure 233 is used to fix the piston rod 12.

[0045] like Figure 4 As shown, the clamping structure 233 includes an articulated seat 234 and two symmetrically arranged clamping handles 235, the clamping handles 235 are hinged relative to the articulated seat 234, and the ends of the two clamping handles 235 are fixed by first bolts 237; the end of the piston rod 12 located outside the cylinder 11 is provided with a piston handle 13, the piston handle 13 is a disc structure, the clamping handle 235 is an arc structure, and the inner ring of the clamping handle 235 is provided with a notch 236 along the horizontal plane, and the edge of the piston handle 13 can be stuck in the notch 236. The piston handle is fixed by the clamping structure 233, so that the piston rod and the ball nut of the ball screw pair move synchronously, and the piston rod performs piston movement inside the cylinder.

[0046] The base 3 is a cylindrical structure, and a through hole 31 is provided at the axial position of the base 3, and the syringe 1 is arranged in the through hole 31; the inner side of the through hole 31 is covered with a rubber layer 32, and the sleeve formed by the rubber layer 32 is interference-fitted with the barrel 11. It is convenient to load and unload the syringe, and the rubber layer increases the friction between the base and the syringe barrel, so that the syringe and the base are relatively fixed.

[0047] Combination Figure 2 and Figure 5 In order to prevent the piston rod and the ball nut of the ball screw pair from moving synchronously and driving the entire cylinder to move relative to the base, the present application provides an embodiment, wherein two baffles 14 are symmetrically arranged at the mouth of the cylinder 11 perpendicular to the main body and facing outward; the base 3 is provided with an inner groove 33 having the same shape as the baffle 14 at the position corresponding to the baffle 14, and the depth of the inner groove 33 is consistent with the thickness of the baffle 14; the base 3 is provided with a cover plate 34 at the side position where the inner groove 33 is provided, and the cover plate 34 is fixed to the base 3 by a second bolt 35. The baffle is clamped by the cover plate and the base, so that the syringe and the base are integrated, and the syringe will not move relative to the base.

[0048] The present application can not only be used to take out silicone oil, but also to inject silicone oil into the eyeball. The motor is a forward and reverse motor, and two momentary switches are provided to control the forward and reverse rotation of the motor respectively, so that the piston rod can suck the silicone oil from the eyeball into the cylinder, or squeeze the silicone oil out of the cylinder and inject it into the eyeball.

[0049] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A silicone oil extractor, characterized in that: include: A syringe (1) comprises a barrel (11) and a piston rod (12) which performs piston motion inside the barrel (11); A driving mechanism (2) drives the piston rod (12) to perform piston motion inside the barrel (11), and forms a negative pressure space inside the barrel (11) by moving the piston rod (12) in the opposite direction relative to the nipple of the syringe (1); A base (3), the driving mechanism (2) is arranged on the base (3), and the syringe (1) is detachably connected to the base (3).

2. The silicone oil extractor according to claim 1, characterized in that: The base (3) is a cylindrical structure. A through hole (31) is provided on the base (3) at an axial position thereof, and the syringe (1) is arranged in the through hole (31).

3. The silicone oil extractor according to claim 2, characterized in that: The inner side of the through hole (31) is covered with a rubber layer (32), and the sleeve formed by the rubber layer (32) is interference fit with the cylinder body (11).

4. The silicone oil extractor according to claim 2, characterized in that: The driving mechanism (2) comprises a motor (21) and a ball screw pair (22); the ball screw pair (22) is arranged parallel to the piston rod (12); the ball nut of the ball screw pair (22) is connected to the piston rod (12) via a connecting piece (23); the connecting piece (23) is detachably connected to the piston rod (12); the motor (21) drives the screw of the ball screw pair (22) to rotate; It also includes a storage battery (24) and a momentary switch (25); the storage battery (24), the momentary switch (25) and the motor (21) form a series circuit; The motor (21), the ball screw pair (22), the storage battery (24) and the inching switch (25) are arranged on the side wall of the base (3).

5. The silicone oil extractor according to claim 4, characterized in that: The driving mechanism (2) further comprises a housing (26), the motor (21), the ball screw pair (22), and the storage battery (24) are arranged in the housing (26), a hole (28) is provided on the side wall of the housing (26), the connecting member (23) passes through the hole (28), and the inching switch (25) is arranged on the outer side wall of the housing (26); The housing (26) is arranged on the side wall of the base (3).

6. The silicone oil extractor according to claim 5, characterized in that: The motor (21) and the lead screw of the ball screw pair (22) are connected via a reduction gear set (27).

7. The silicone oil extractor according to claim 4, characterized in that: The connecting member (23) comprises an L-shaped connecting rod and a clamping structure (233); the L-shaped connecting rod is formed by a first connecting rod (231) and a second connecting rod (232) arranged vertically, wherein the first connecting rod (231) is arranged parallel to the screw of the ball screw pair (22), the first connecting rod (231) passes through the housing (26), the end of the first connecting rod (231) is connected to the ball nut of the ball screw pair (22), the second connecting rod (232) is located outside the housing (26), and the clamping structure (233) is arranged at the end of the second connecting rod (232); The clamping structure (233) is used to fix the piston rod (12).

8. The silicone oil extractor according to claim 7, characterized in that: The clamping structure (233) comprises an articulated seat (234) and two symmetrically arranged clamping handles (235), wherein the clamping handles (235) are hinged relative to the articulated seat (234), and the ends of the two clamping handles (235) are fixed by first bolts (237); The piston rod (12) is provided with a piston handle (13) at the end portion located outside the cylinder body (11); the piston handle (13) is a disc structure; the clamping handle (235) is an arc structure; the inner circle of the clamping handle (235) is provided with a notch (236) along a horizontal plane; and the edge of the piston handle (13) can be inserted into the notch (236).

9. The silicone oil extractor according to claim 2 or 3, characterized in that: Two baffles (14) are symmetrically arranged at the mouth of the cylinder (11) perpendicular to the main body and facing outward; The base (3) is provided with an inner groove (33) having the same shape as the baffle (14) at a position corresponding to the baffle (14), and the depth of the inner groove (33) is consistent with the thickness of the baffle (14); The base (3) is provided with a cover plate (34) at a side position where the inner groove (33) is provided, and the cover plate (34) is fixed to the base (3) by a second bolt (35).

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