Eye diagnosis vitreous body sampling device with shearing function

Abstract

A vitreous body sampling device with a shearing function for eye diagnosis relates to the technical field of medical auxiliary equipment and is characterized in that a needle head is mounted at the liquid extraction end of a syringe barrel, a transmission mechanism is mounted at the finger pressing part of the syringe barrel, and the cutting end of the transmission mechanism is positioned in a cavity of the needle head; the outer cylinder pipe is located at the liquid pumping end of the syringe cylinder body and fixedly connected with the syringe cylinder body, two positioning plates are fixedly connected to the outer cylinder pipe, one end of each positioning plate is fixedly connected with an inner cylinder pipe, and the cutting end of the transmission mechanism is located between the outer cylinder pipe and the inner cylinder pipe. According to the vitreous body sampling device with the shearing function for eye diagnosis, operation of medical staff is facilitated, traction to the retina of a patient in the taking-out process of the vitreous body can be effectively avoided, the vitreous body in the eyes of the patient is extracted through the syringe barrel, the needle head and the piston rod, in the extraction process, the operation is simple, and the operation is convenient. The extracted vitreous body is cut through the transmission mechanism, and the situation that the vitreous body pulls the retina is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical auxiliary equipment, in particular to a vitreous body sampling device with shearing function for eye diagnosis. Background Art

[0002] Infectious endophthalmitis is a blinding eye disease, and clear etiological examination is crucial. For viruses, a relatively reliable diagnosis can be obtained by sampling the anterior chamber fluid, while for many other pathogenic microorganisms, vitreous sampling is the only way. Such as fungal tuberculosis infection. The diagnosis rate of bacterial endophthalmitis in the posterior segment is also significantly higher than that of the anterior chamber fluid. Of course, in some studies, pathological examinations, biochemical analyses or other experiments can be performed on the vitreous to determine the inflammatory changes of certain diseases, such as diabetic macular edema and inflammation related to retinal vascular occlusion. In the process of removing the vitreous from the patient's eye, the vitreous will cause a certain amount of traction on the retina. One of the existing sampling methods is to connect to an air pump device, which can only be used in conjunction with a device with a vitrectomy machine, or it is extracted like a syringe, which cannot solve the problem of vitreous traction. Utility Model Content

[0003] In order to overcome the shortcomings of the background technology, the utility model discloses a vitreous sampling device with shearing function for eye diagnosis. The utility model is convenient for medical staff to operate and can effectively prevent the vitreous from pulling on the patient's retina during the removal process. The vitreous in the patient's eye is extracted through a syringe barrel, a needle and a piston rod. During the extraction process, the extracted vitreous is sheared by a transmission mechanism to prevent the vitreous from pulling on the retina.

[0004] In order to achieve the purpose of the utility model, the utility model adopts the following technical solutions:

[0005] A vitreous sampling device with shearing function for eye diagnosis comprises a syringe barrel, and a piston rod is slidably connected in the syringe barrel. A needle is installed on the liquid extraction end of the syringe barrel, and the end of the needle is a closed end. A suction port is opened on the side wall of the needle near the closed end. A transmission mechanism is installed on the finger pressing part of the syringe barrel, and the cutting end of the transmission mechanism is located in the cavity of the needle.

[0006] The needle includes an outer tube and an inner tube, the outer tube is located on the liquid extraction end of the syringe barrel and is fixedly connected, and two positioning plates are fixedly connected to the outer tube, one end of the positioning plate is fixedly connected to the inner tube, and the cutting end of the transmission mechanism is located between the outer tube and the inner tube.

[0007] The bottom end of the inner tube is flat, and the flat end of the inner tube is located inside the outer tube.

[0008] One end of the outer tube is a pintle, and the other end of the outer tube is pointed. A positioning plate is fixedly connected to the pintle portion of the outer tube.

[0009] The transmission mechanism comprises a driving rod, a transmission rod, an arc plate, a rotating ring, a cutting blade, a fixed blade, a sliding plate and a connecting rod. The number of the arc plates is two, and the two arc plates are respectively located on the two finger pressing parts of the syringe barrel and are fixedly connected, and the arc plate is rotatably connected with a rotating ring, the rotating ring is fixedly connected with driving rods arranged equidistantly, and the bottom end of the driving rod is also fixedly connected with a rotating ring, two transmission rods are fixedly connected to the rotating ring at the bottom end of the driving rod, and one end of the transmission rod is fixedly connected with a sliding plate, the sliding plate is located between the outer tube and the inner tube and is contacted and connected with the positioning plate, the sliding plate is fixedly connected with a connecting rod, and the connecting rod is located between the inner wall of the outer tube and the outer wall of the inner tube, the bottom end of the connecting rod is fixedly connected with a cutting blade, and the upper surface of the cutting blade is contacted and connected with the flat end of the inner tube, the number of the fixed blades is two, the two fixed blades are both located on the inner wall of the outer tube and are fixedly connected, and the fixed blade is contacted and connected with the cutting blade.

[0010] The outer wall of the rotating ring on the arc-shaped plate is provided with anti-slip grooves arranged at equal distances.

[0011] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0012] The utility model discloses a vitreous body sampling device with shearing function for eye diagnosis, which is convenient for medical staff to operate and can effectively prevent the vitreous body from pulling on the patient's retina during the removal process. The vitreous body in the patient's eye is extracted through a syringe barrel, a needle and a piston rod. During the extraction process, the extracted vitreous body is sheared through a transmission mechanism to prevent the vitreous body from pulling on the retina. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2 It is a cross-sectional view of the utility model;

[0015] Figure 3 It is a schematic diagram of the enlarged structure of point A of the utility model;

[0016] Figure 4 It is an enlarged structural diagram of B of the utility model;

[0017] Figure 5 It is a schematic diagram of the enlarged structure of the C position of the utility model;

[0018] 1. Syringe barrel; 2. Transmission mechanism; 201. Driving rod; 202. Transmission rod; 203. Arc plate; 204. Rotating ring; 205. Cutting blade; 206. Fixed blade; 207. Sliding plate; 208. Connecting rod; 3. Needle; 301. Outer barrel; 302. Inner barrel; 4. Piston rod. DETAILED DESCRIPTION

[0019] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0020] Combined with Figures 1 to 5 The vitreous sampling device with shearing function for eye diagnosis comprises a syringe barrel 1, and a piston rod 4 is slidably connected inside the syringe barrel 1, a needle 3 is installed on the liquid extraction end of the syringe barrel 1, a transmission mechanism 2 is installed on the finger pressing part of the syringe barrel 1, and the cutting end of the transmission mechanism 2 is located in the cavity of the needle 3.

[0021] The needle 3 includes an outer tube 301 and an inner tube 302, wherein the outer tube 301 is located on the liquid extraction end of the syringe barrel 1 and is fixedly connected, and two positioning plates are fixedly connected to the outer tube 301, one end of the positioning plate is fixedly connected to the inner tube 302, and the cutting end of the transmission mechanism 2 is located between the outer tube 301 and the inner tube 302, and the vitreous body in the patient's eye is extracted through the inner tube 302.

[0022] The bottom end of the inner tube 302 is flat, and the flat end of the inner tube 302 is located inside the outer tube 301 .

[0023] One end of the outer tube 301 is a pintle, and the other end of the outer tube 301 is pointed. A positioning plate is fixedly connected to the pintle portion of the outer tube 301 .

[0024] The transmission mechanism 2 includes a driving rod 201, a transmission rod 202, an arc plate 203, a rotating ring 204, a cutting blade 205, a fixed blade 206, a sliding plate 207 and a connecting rod 208. The number of the arc plates 203 is two. The two arc plates 203 are respectively located on the two finger pressing parts of the syringe barrel 1 and are fixedly connected, and the arc plate 203 is rotatably connected with the rotating ring 204. The rotating ring 204 is fixedly connected with driving rods 201 arranged equidistantly, and the bottom end of the driving rod 201 is also fixedly connected with the rotating ring 204. Two driving rods 202 are fixedly connected to the rotating ring 204 at the bottom of the driving rod 201, and one end of the driving rod 202 is fixedly connected with the sliding plate 207. The sliding plate 207 is located between the outer tube 301 and the inner tube The outer tube 301 is provided with a plurality of screw terminals, and the screw terminals are provided with a plurality of screw terminals, and the plurality of screw terminals are provided with a plurality of screw terminals. The plurality of screw terminals are provided with a plurality of screw terminals. The plurality of screw terminals are provided with a plurality of screw terminals. The plurality of screw terminals are provided with a plurality of screw terminals.

[0025] As a preferred embodiment of the present invention, the positions of the cutting blade 205 and the fixed blade 206 in the needle head correspond to the positions of the suction ports on the needle head, so as to facilitate cutting.

[0026] The outer wall of the rotating ring 204 on the arc plate 203 is provided with anti-slip grooves arranged at equal distances, so as to facilitate the operation by medical staff wearing gloves.

[0027] The vitreous body sampling device with shearing function for eye diagnosis is described as follows: when in use, the medical staff inserts the outer tube 301 into the patient's eye through the syringe barrel 1, and extracts the vitreous body in the patient's eye by pulling the piston rod 4. The vitreous body is sucked into the suction port on the needle. Then, the medical staff rotates the rotating ring 204 on the arc plate 203. The rotating ring 204 drives the transmission rod 202 to rotate through the driving rod 201. The transmission rod 202 drives the connecting rod 208 to rotate through the sliding plate 207. The connecting rod 208 drives the cutting blade 205 during the rotation process. The vitreous body between the cutting blade 205 and the fixed blade 206 is sheared by the rotation of the cutting blade 205.

[0028] The parts of the present invention that are not described in detail are prior art. Although the present invention is specifically demonstrated and introduced in conjunction with the preferred implementation scheme, there are many methods and ways to implement the technical solution. The above is only a preferred implementation scheme of the present invention. However, technical personnel in the relevant field should understand that various changes can be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined in the attached claims, which are all within the scope of protection of the present invention.

Claims

1. A vitreous sampling device for ocular diagnosis with shearing function, comprising a syringe barrel (1), wherein a piston rod (4) is slidably connected to the syringe barrel (1), wherein: A needle (3) is mounted on the liquid extraction end of the syringe barrel (1), a transmission mechanism (2) is mounted on the finger pressing portion of the syringe barrel (1), and a cutting end of the transmission mechanism (2) is located in the cavity of the needle (3).

2. The vitreous body sampling device with shearing for eye diagnosis according to claim 1 is characterized in that: The needle (3) comprises an outer tube (301) and an inner tube (302); the outer tube (301) is located on and fixedly connected to the liquid extraction end of the syringe barrel (1); two positioning plates are fixedly connected to the outer tube (301); one end of the positioning plate is fixedly connected to the inner tube (302); and the cutting end of the transmission mechanism (2) is located between the outer tube (301) and the inner tube (302).

3. The vitreous body sampling device with shearing for eye diagnosis according to claim 2 is characterized by: The bottom end of the inner tube (302) is flat, and the flat end of the inner tube (302) is located inside the outer tube (301).

4. The vitreous body sampling device with shearing for eye diagnosis according to claim 2 is characterized by: One end of the outer tube (301) is a pintle, and the other end of the outer tube (301) is pointed. A positioning plate is fixedly connected to the pintle portion of the outer tube (301).

5. The vitreous body sampling device with shearing for eye diagnosis according to claim 1, characterized in that: The transmission mechanism (2) comprises a driving rod (201), a transmission rod (202), an arc plate (203), a rotating ring (204), a cutting blade (205), a fixed blade (206), a sliding plate (207) and a connecting rod (208). The number of the arc plates (203) is two. The two arc plates (203) are respectively located on two finger pressing positions of the syringe barrel (1) and are fixedly connected. The arc plates (203) are rotatably connected to the rotating ring (204). The rotating ring (204) is fixedly connected to driving rods (201) arranged at equal intervals. The bottom end of the driving rod (201) is also fixedly connected to the rotating ring (204). The rotating ring (204) at the bottom end of the driving rod (201) is fixedly connected to two driving rods (202). One end of the movable rod (202) is fixedly connected to a sliding plate (207), the sliding plate (207) is located between the outer tube (301) and the inner tube (302) and is in contact with the positioning plate, the sliding plate (207) is fixedly connected to a connecting rod (208), and the connecting rod (208) is located between the inner wall of the outer tube (301) and the outer wall of the inner tube (302), the bottom end of the connecting rod (208) is fixedly connected to a cutting blade (205), and the upper surface of the cutting blade (205) is in contact with the flat end of the inner tube (302), the number of the fixed blades (206) is two, the two fixed blades (206) are both located on the inner wall of the outer tube (301) and are fixedly connected, and the fixed blades (206) are in contact with the cutting blade (205).

6. The vitreous body sampling device with shearing function for ocular diagnosis according to claim 5, characterized in that: The outer wall of the rotating ring (204) on the arc-shaped plate (203) is provided with anti-slip grooves arranged at equal distances.

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