Aqueous humor quantitative collection device capable of accurately controlling pressure

Abstract

The utility model discloses an aqueous humor quantitative collecting device capable of accurately controlling pressure, which is characterized in that a limiting device is arranged on an adjusting device; the control button is slidably arranged on the adjusting device in a sleeving mode and can rotate to a locking working position or a starting working position relative to the adjusting device. The piston assembly penetrates through the limiting device and the adjusting device and is fixedly installed on the control button. A plurality of scale marks are arranged on the outer wall of the suction cylinder, the suction cylinder is fixed to the adjusting device, and the suction cylinder is arranged outside the limiting device and the piston assembly in a sleeving mode; the liquid collecting assembly is installed at the end, away from the adjusting device, of the suction barrel and communicates with the suction barrel. By using the device, intraoperative side injury caused by movement of eyeballs of a patient in an operation can be effectively avoided, meanwhile, loss of intraocular fluid sample amount collected by an injector is avoided, the volume of the sampled intraocular fluid can be accurately controlled, the intraocular pressure level can be reduced, the operation process is convenient and rapid, and pain of the patient is obviously relieved.

Description

Technical Field

[0001] The utility model relates to the technical fields of medical devices and the like, and in particular to a quantitative aqueous humor collection device capable of accurately controlling pressure. Background Art

[0002] Aqueous humor is a transparent liquid that fills the anterior and posterior chambers, about 0.25 to 0.3 ml, which is continuously produced from the eye and discharged to the outside of the eye to dynamically maintain the balance of intraocular pressure. In clinical work, when patients have acute increase in intraocular pressure, if the antihypertensive effect of drugs is not good, anterior chamber paracentesis is often used to extract a small amount of aqueous humor to reduce intraocular pressure.

[0003] However, because topical anesthesia is often used when performing anterior chamber puncture and collecting aqueous humor in ophthalmology examination rooms or operating rooms, the operation is performed with one hand under a slit lamp or operating microscope. During the operation, the patient is often nervous and has involuntary eye movement, which may cause local eye damage during the puncture process, such as corneal epithelial scratches, conjunctival lacerations and bleeding. For beginners and unskilled doctors, performing anterior chamber puncture and fluid extraction can also have serious adverse consequences, such as damage to the lens, cataracts, and decreased vision; damage to the iris, causing anterior chamber hemorrhage, etc. At present, there is no medical device specifically used for collecting aqueous humor or anterior chamber puncture in clinical operations. The insulin syringes or 1ml syringe needles currently used have simple structures and cannot accurately control the volume of aqueous humor collected. It is easy for the intraocular pressure to be reduced too little or too low. Repeated punctures are often required to collect a certain amount of aqueous humor or reduce the intraocular pressure to the expected level. At the same time, a needle that is too long makes it difficult to control the depth of penetration into the anterior chamber during the puncture process. If the needle is inserted too deeply, it is easy to damage the surrounding structures and cause anterior chamber hemorrhage or traumatic cataracts. If the needle is inserted too shallowly, it is difficult to collect aqueous humor and reduce intraocular pressure. Utility Model Content

[0004] In view of this, in order to solve the above problems, the purpose of the utility model is to provide a quantitative aqueous humor collection device capable of accurately controlling pressure, which includes:

[0005] Liquid collecting assembly, control button, adjusting device, suction cylinder, piston assembly, and limiting device;

[0006] The limiting device is installed on the adjusting device;

[0007] The control button is slidably mounted on the adjustment device, and the control button can be rotated relative to the adjustment device to a locking working position or a starting working position;

[0008] The piston assembly passes through the limiting device and the adjusting device and is fixedly installed on the control button;

[0009] The outer wall of the suction cylinder is provided with a plurality of scale lines, the suction cylinder is fixed to the adjustment device, and the suction cylinder is sleeved on the outside of the limiting device and the piston assembly;

[0010] The liquid collecting component is installed at one end of the suction cylinder away from the regulating device, and the liquid collecting component is communicated with the suction cylinder.

[0011] The above-mentioned aqueous humor quantitative collection device with precise pressure control, wherein the adjustment device includes: an adjustment rod head, an adjustment rod core, and an adjustment button; the outer wall array of the adjustment rod head is provided with a plurality of first splines, and a guide groove is formed between every two of the first splines, the interior of the adjustment rod head is provided with a first mounting hole, and the bottom of the first mounting hole is provided with a second mounting hole, one end of the adjustment rod core is provided with a shoulder, the adjustment rod core extends into the second mounting hole, and one end of the adjustment rod core is fixed to the first mounting hole through the shoulder, so that an annular groove is formed between the outer wall of the adjustment rod core and the inner wall of the first mounting hole, the end of the adjustment button is installed at the end of the first mounting hole, so that a gap is left between the adjustment button and the plurality of first splines, and the outer wall of the adjustment button is provided with a fixed scale line.

[0012] In the above-mentioned aqueous humor quantitative collection device capable of precisely controlling pressure, the inner wall array of the regulating rod core is provided with a plurality of second splines.

[0013] The above-mentioned aqueous humor quantitative collection device with precise pressure control, wherein the limiting device includes: a nut, a screw, and a limiting piston; the outer wall of the screw is provided with a plurality of first grooves, one end of the screw passes through the nut and is installed on the adjusting rod core, and the first groove cooperates with the second spline, and the limiting piston is installed on the other end of the screw.

[0014] The above-mentioned aqueous humor quantitative collection device with precise pressure control, wherein the piston assembly includes: a piston rod and a piston; one end of the piston rod passes through the limit piston, the screw rod, the adjusting rod core in sequence and is fixedly installed with the control button, and the other end of the piston rod is installed on the piston.

[0015] In the above-mentioned aqueous humor quantitative collection device capable of precisely controlling pressure, a plurality of third splines are provided on the outer wall array of the nut.

[0016] The above-mentioned aqueous humor quantitative collection device with precise pressure control, wherein the inner wall of the suction cylinder is in contact with the limit piston and the piston, and one end of the suction cylinder is installed on the annular groove through a flange, and the interior of the suction cylinder is provided with a second groove that cooperates with the third spline.

[0017] The above-mentioned aqueous humor quantitative collection device with precise pressure control, wherein the inner wall of the control button is provided with a plurality of blocks slidably arranged in the plurality of guide grooves, the outer wall of the control button is provided with a starting scale line and a locking scale line, and the control button is rotated relative to the gap through the block so that the starting scale line is aligned with the fixed scale line and is located in the starting working position, or the locking scale line is aligned with the fixed scale line and is located in the locking working position.

[0018] The above-mentioned aqueous humor quantitative collection device with precise pressure control, wherein the liquid collection component includes: a liquid collection tube and a needle, one end of the liquid collection tube is installed on the suction cylinder, and the other end of the liquid collection tube is installed with the needle.

[0019] The above-mentioned aqueous humor quantitative collection device capable of precisely controlling pressure is characterized in that the piston rod is mounted on the control button via a clamping nut.

[0020] Compared with the prior art, the above technical solution has the following positive effects:

[0021] Through the application of the utility model, a quantitative aqueous humor collection device with precise pressure control is provided. Through the use of the device, the intraoperative secondary injury caused by the movement of the patient's eyeball during the operation can be effectively avoided, and the loss of the amount of intraocular fluid sample collected by the syringe can be avoided. The volume of the sampled intraocular fluid and the reduced intraocular pressure level can also be accurately controlled. The operation process is convenient and fast, and the patient's pain is significantly reduced. In addition, the device can be reused, which is convenient for clinicians to operate, reduces the use of clinical consumables, and is safe and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of a quantitative aqueous humor collection device capable of accurately controlling pressure according to the utility model.

[0023] Figure 2 The utility model is an exploded view of a quantitative aqueous humor collection device capable of precisely controlling pressure.

[0024] Figure 3 It is a schematic diagram of adjusting the rod head in the utility model.

[0025] Figure 4 It is a schematic diagram of the adjusting rod core in the utility model.

[0026] Figure 5 It is a schematic diagram of the piston assembly in the utility model.

[0027] Figure 6 This is a schematic diagram of the initial state of an aqueous humor quantitative collection device capable of precisely controlling pressure according to the utility model.

[0028] Figure 7The utility model is a quantitative adjustment schematic diagram of an aqueous humor quantitative collection device capable of precisely controlling pressure.

[0029] Figure 8 It is a schematic diagram of the negative pressure chamber formed by the forward-pushing piston in the utility model.

[0030] Fig. 9 It is a schematic diagram of the locking piston in the utility model.

[0031] Fig.10 It is a schematic diagram of the puncture operation in the present invention.

[0032] Fig.11 It is a schematic diagram of the start of liquid extraction in the utility model.

[0033] Fig.12 It is a schematic diagram of the completion of liquid extraction in the utility model.

[0034] 1. Limiting device; 11. Nut; 111. Third spline; 12. Screw rod; 121. First groove; 13. Limiting piston; 2. Adjusting device; 21. Adjusting rod head; 22. First spline; 23. Guide groove; 24. First mounting hole; 241. Second mounting hole; 25. Adjusting rod core; 251. Second spline; 252. Shoulder; 26. Annular groove; 27. Adjusting button; 28. Gap; 29. ​​Fixed scale line; 3. Control button; 31. Block; 4. Piston assembly; 41. Piston rod; 42. Piston; 5. Suction cylinder; 51. Flange; 52. Second groove; 6. Liquid collecting assembly; 61. Liquid collecting tube; 62. Needle; 7. Clamping nut. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with the accompanying drawings and specific implementations, but they are not intended to limit the present invention.

[0036] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect that the utility model can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0037] like Figures 1 to 12As shown, a preferred embodiment of a quantitative aqueous humor collection device with accurately controlled pressure is shown, which includes: a liquid collection component 6, a control button 3, an adjustment device 2, a suction cylinder 5, a piston component 4, and a limit device 1.

[0038] The limit device 1 is installed on the adjusting device 2; the control button 3 is slidably mounted on the adjusting device 2, and the control button 3 can be rotated relative to the adjusting device 2 to a locked working position or a start working position; the piston assembly 4 passes through the limit device 1 and the adjusting device 2 and is fixedly installed on the control button 3; a plurality of scale lines are provided on the outer wall of the suction cylinder 5, the suction cylinder 5 is fixed to the adjusting device 2, and the suction cylinder 5 is mounted on the outside of the limit device 1 and the piston assembly 4; the liquid collecting assembly 6 is installed at one end of the suction cylinder 5 away from the adjusting device 2, and the liquid collecting assembly 6 is connected to the suction cylinder 5.

[0039] In actual use, the outer wall of the suction tube 5 is provided with a scale of 0-0.3 ml, the maximum volume of the liquid collecting component 6 is 0.3 ml, the inner diameter of the suction tube 5 is 5 mm, and the outer diameter is 6 mm; the outer diameter of the control button 3 is 17.2 mm; the total length of the suction tube 5 is 61.5 mm; the length of the needle 62 extending out of the liquid collecting tube 61 is 2 mm; and the length of the liquid collecting tube is 41 mm. In addition, the suction tube 5 and the liquid collecting tube 61 are both made of transparent material.

[0040] The utility model also has the following implementation methods based on the above:

[0041] Furthermore, a quantitative aqueous humor collection device capable of precisely controlling pressure is provided, wherein the adjustment device 2 comprises: an adjustment rod head 21, an adjustment rod core 25, and an adjustment button 27; a plurality of first splines 22 are provided in an array on the outer wall of the adjustment rod head 21, a guide groove 23 is formed between every two first splines 22, a first mounting hole 24 is provided inside the adjustment rod head 21, a second mounting hole 241 is provided at the bottom of the first mounting hole 24, a shoulder 252 is provided at one end of the adjustment rod core 25, the adjustment rod core 25 extends into the second mounting hole 241, and one end of the adjustment rod core 25 is fixed to the first mounting hole 24 through the shoulder 252, so that an annular groove 26 is formed between the outer wall of the adjustment rod core 25 and the inner wall of the first mounting hole 24, the end of the adjustment button 27 is installed at the end of the first mounting hole 24, so that a gap 28 is left between the adjustment button 27 and the plurality of first splines 22, and a fixed scale line 29 is provided on the outer wall of the adjustment button 27.

[0042] Furthermore, a quantitative aqueous humor collection device capable of precisely controlling pressure is provided, wherein the inner wall array of the adjusting rod core 21 is provided with a plurality of second splines 251 .

[0043] Furthermore, a quantitative aqueous humor collection device with precise pressure control is provided, wherein the limiting device 1 comprises: a nut 11, a screw rod 12, and a limiting piston 13; the outer wall of the screw rod 12 is provided with a plurality of first grooves 121, one end of the screw rod 12 passes through the nut 11 and is installed on the adjusting rod core 25, and the first groove 121 cooperates with the second spline 251, and the limiting piston 13 is installed on the other end of the screw rod 12.

[0044] Furthermore, a quantitative aqueous humor collection device capable of precisely controlling pressure is provided, wherein the piston assembly 4 comprises: a piston rod 41 and a piston 42; one end of the piston rod 41 passes through the limit piston 13, the screw rod 12, the adjusting rod core 25 in sequence and is fixedly mounted to the control button 3, and the other end of the piston rod 41 is mounted on the piston 42. Specifically, the piston rod 41 is mounted on the control button 3 through a clamping nut 7. Specifically, the end of the piston rod 41 mounted on the control button 3 has a reduced shoulder, and the outer wall of the shoulder is provided with a thread, so that the piston rod 41 can be mounted on the control button 3 through the clamping nut 7. Specifically, the piston 42 and the limit piston 13 of the device are both made of wear-resistant materials, and are both in close contact with the inner wall of the suction cylinder 5.

[0045] Furthermore, a quantitative aqueous humor collection device capable of precisely controlling pressure is provided, wherein a plurality of third splines 111 are provided in an array on the outer wall of the nut 11 .

[0046] Furthermore, a quantitative aqueous humor collection device with precise pressure control is provided, wherein the inner wall of the suction cylinder 5 is in contact with the limit piston 13 and the piston 42, and one end of the suction cylinder 5 is installed in the annular groove 26 through a flange 51, and the interior of the suction cylinder 5 is provided with a second groove 52 that cooperates with the third spline 111.

[0047] Furthermore, a quantitative aqueous humor collection device with precise pressure control is provided, wherein the inner wall of the control button 3 is provided with a plurality of blocks 31 slidably arranged in a plurality of guide grooves 23, and the outer wall of the control button 3 is provided with a start scale line and a lock scale line, and the control button 3 is rotated relative to the gap 28 through the block 31 so that the start scale line is aligned with the fixed scale line 29 and is located in the start working position, or the lock scale line is aligned with the fixed scale line 29 and is located in the lock working position.

[0048] Further, a quantitative aqueous humor collection device capable of precisely controlling pressure is provided, wherein the liquid collection component 6 comprises: a liquid collection tube 61, a needle 62, one end of the liquid collection tube 61 is mounted on the suction cylinder 5, and the other end of the liquid collection tube 61 is mounted with the needle 62. Specifically, the diameter of one end of the suction cylinder 5 where the liquid collection tube 61 is mounted is relatively small, so that the suction cylinder 5 can be inserted into the liquid collection tube 61, so that the installation of the suction cylinder 5 and the liquid collection tube 61 is more compact, and the disassembly is convenient, and further, one end of the liquid collection tube 61 where the needle 62 is mounted is a cone surface, so that the installation of the needle 62 is more convenient.

[0049] Furthermore, a quantitative aqueous humor collection device capable of precisely controlling pressure is provided, wherein the piston rod 41 is mounted on the control button 3 via a clamping nut 7 .

[0050] The device has the following installation process:

[0051] Step 1: Install the adjusting device 2; press the adjusting rod core 25 into the second mounting hole 241 of the adjusting rod head 21 until the shaft shoulder 252 contacts the bottom of the groove of the first mounting hole 24;

[0052] Step 2: Install the limit device 1; install the nut 11 and the limit piston 13 at both ends of the screw rod 12 respectively, and rotate the nut 11 until the end surface of the nut 11 contacts the end surface of the limit piston 13;

[0053] Step 3: Install the piston assembly 4: Install the piston 42 at one end of the piston rod 41, and sleeve the installed limit device 1 on the piston rod 41 until the limit piston 13 contacts the piston 42, and at this time, there is no axial gap between the piston 42, the limit piston 13 and the nut 7;

[0054] Step 4: Install the limit device 1 and the piston assembly 4 in the suction cylinder 5. At this time, the third spline 111 on the nut 11 is installed on the second groove 52 on the suction cylinder 5;

[0055] Step 5: Align the adjusting rod core 25 in the adjusting device 2 with the first groove 121 on the screw rod 12 and push it in until the flange 51 is installed in the annular groove 26 and the flange 51 contacts the groove bottom of the first mounting hole 24;

[0056] Step 6: Push the adjusting button 27 from the end of the suction cylinder 5 away from the adjusting device 2 until the end surface of the adjusting button 27 contacts the end surface of the adjusting rod head 21 and fix it with screws;

[0057] Step 7: Rotate the adjusting knob 27 so that the limiting piston 13 drives the piston 42 to move to the end of the suction cylinder 5 where the liquid collecting pipe 61 is installed;

[0058] Step 8: Slide the control button 3 onto the adjusting rod core 25 until the block 31 is located in the gap 28, rotate the control button 3 so that the start scale line on is aligned with the fixed scale line 29, and finally rotate the clamping nut 7 to install the piston rod 41 on the control button 3;

[0059] Step 9: Install the needle 62 on the liquid collecting tube 61, and then install the liquid collecting tube 61 on the suction cylinder 5, see Figure 6 shown.

[0060] This device has the following usage process:

[0061] Step 1: Rotate the control knob 3 to the locked working position, and then rotate the adjusting device 2 to move the limit device 1 to a certain scale line of the suction cylinder 5; specifically, to adjust the amount of liquid pumped, take adjusting 0.2ml as an example, first rotate the control knob 3 to the locked scale line off, so that the locked scale line off is aligned with the fixed scale line 29 on the adjusting knob 27, and then rotate the adjusting knob 27 to move the limit piston 13 backward to the position of the scale line 0.2ml of the suction cylinder 5. During the adjustment process, due to the negative pressure in the rear cavity of the piston 42, the piston 42 will move backward closely together with the limit piston 13. At this time, the scale line 0.2ml is between the limit piston 13 and the piston 42, and the control knob 3 will also move backward synchronously along the guide groove 23. Even at the maximum adjustment amount, it will not leave the guide groove 23 of the adjusting device 2, please refer to Figure 7 shown.

[0062] Step 2: Slide the control button 3 relative to the adjustment device 2, the control button 3 drives the piston assembly 4 to move, and a negative pressure chamber is formed between the limit device 1 and the piston assembly 4; specifically, push the control button 3 forward relative to the adjustment rod head 21, thereby driving the piston 42 to move forward to the end of the suction cylinder 5 to form a negative pressure chamber, see Figure 8 shown.

[0063] Step 3: Rotate the control knob 3 to the start working position; specifically, rotate the control knob 3 so that the start scale line on is aligned with the fixed scale line 29 of the adjustment knob 27, see Fig. 9 shown.

[0064] Step 4: Puncture the puncture site through the liquid collection component 6; specifically, puncture the puncture site through the needle 62, see Fig.10 shown.

[0065] Step 5: Rotate the control knob 3 to the locked working position. Due to the negative pressure, the piston assembly 4 moves toward the limit device 1 and starts pumping. At this time, the control knob 3 moves away from the adjustment device 2 relative to the guide groove 23 through the block 31 until the piston assembly 4 contacts the limit device 1, and the quantitative pumping is completed. Specifically, rotate the control knob 3 so that the locking scale line off is aligned with the fixed scale line 29. Due to the negative pressure, the piston 42 automatically retreats and pumping begins. Please refer to Fig.11 As shown, the control button 3 moves backward along the guide groove 23 until the piston 42 contacts the limit piston 13, and the quantitative suction is completed. Fig.12 shown.

[0066] Step 6: withdraw the liquid collecting assembly 6 from the puncture site and remove it from the suction tube 5; specifically, withdraw the needle 62 from the puncture site, and then remove the liquid collecting tube 61 from the suction tube 5. At this time, please refer to the status of the device. Figure 7 shown.

[0067] Step 7: Rotate the adjusting device 2 so that the limiting device 1 drives the piston assembly 4 to move to the end of the suction cylinder 5 where the liquid collecting assembly 6 is installed. The piston assembly 4 drives the control button 3 to slide on the adjusting device 2, and then rotate the control button 3 to the start working position. Specifically, rotate the adjusting button 27 so that the limiting piston 13 can drive the piston 42 to move to the end of the suction cylinder 5 where the liquid collecting pipe 61 is installed. At this time, the control button 3 moves in the guide groove 23 of the adjusting rod head 21 until the block 31 moves to the gap 28. Rotate the control button 3 so that the start scale line on is aligned with the fixed scale line 29, and the control button 3 is in the start working position.

[0068] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A quantitative aqueous humor collection device capable of precisely controlling pressure, characterized in that: include: Liquid collecting assembly, control button, adjusting device, suction cylinder, piston assembly, and limiting device; The limiting device is installed on the adjusting device; The control button is slidably mounted on the adjustment device, and the control button can be rotated relative to the adjustment device to a locking working position or a starting working position; The piston assembly passes through the limiting device and the adjusting device and is fixedly installed on the control button; The outer wall of the suction cylinder is provided with a plurality of scale lines, the suction cylinder is fixed to the adjustment device, and the suction cylinder is sleeved on the outside of the limiting device and the piston assembly; The liquid collecting component is installed at one end of the suction cylinder away from the regulating device, and the liquid collecting component is communicated with the suction cylinder.

2. The aqueous humor quantitative collection device capable of precisely controlling pressure according to claim 1, characterized in that: The adjusting device includes: an adjusting rod head, an adjusting rod core, and an adjusting button; a plurality of first splines are arranged in an array on the outer wall of the adjusting rod head, a guide groove is formed between every two of the first splines, a first mounting hole is arranged inside the adjusting rod head, a second mounting hole is arranged at the bottom of the first mounting hole, a shoulder is arranged at one end of the adjusting rod core, the adjusting rod core extends into the second mounting hole, and one end of the adjusting rod core is fixed to the first mounting hole through the shoulder, so that an annular groove is formed between the outer wall of the adjusting rod core and the inner wall of the first mounting hole, the end of the adjusting button is installed at the end of the first mounting hole, so that a gap is left between the adjusting button and the plurality of first splines, and a fixed scale line is arranged on the outer wall of the adjusting button.

3. The device for quantitatively collecting aqueous humor with precise pressure control according to claim 2, characterized in that: The inner wall array of the adjusting rod core is provided with a plurality of second splines.

4. The aqueous humor quantitative collection device capable of precisely controlling pressure according to claim 3, characterized in that: The limiting device includes: a nut, a screw rod, and a limiting piston; the outer wall of the screw rod is provided with a plurality of first grooves, one end of the screw rod passes through the nut and is installed on the adjusting rod core, and the first groove cooperates with the second spline, and the limiting piston is installed on the other end of the screw rod.

5. The aqueous humor quantitative collection device capable of precisely controlling pressure according to claim 4, characterized in that: The piston assembly comprises: a piston rod and a piston; one end of the piston rod passes through the limit piston, the screw rod, the adjusting rod core in sequence and is fixedly installed with the control button, and the other end of the piston rod is installed on the piston.

6. The aqueous humor quantitative collection device capable of precisely controlling pressure according to claim 5, characterized in that: An outer wall array of the nut is provided with a plurality of third splines.

7. The device for quantitatively collecting aqueous humor with precise pressure control according to claim 6, characterized in that: The inner wall of the suction cylinder is in contact with the limit piston and the piston, and one end of the suction cylinder is installed on the annular groove through a flange. A second groove matching the third spline is provided inside the suction cylinder.

8. The device for quantitatively collecting aqueous humor with precise pressure control according to claim 2, characterized in that: The inner wall of the control button is provided with a plurality of blocks slidably arranged in the plurality of guide grooves, and the outer wall of the control button is provided with a starting scale line and a locking scale line. The control button rotates relative to the gap through the block so that the starting scale line is aligned with the fixed scale line and is located in the starting working position, or the locking scale line is aligned with the fixed scale line and is located in the locking working position.

9. The aqueous humor quantitative collection device capable of precisely controlling pressure according to claim 1, characterized in that: The liquid collecting assembly comprises: a liquid collecting tube and a needle. One end of the liquid collecting tube is installed on the suction cylinder, and the other end of the liquid collecting tube is installed on the needle.

10. The device for quantitatively collecting aqueous humor with precise pressure control according to claim 5, characterized in that: The piston rod is mounted on the control button via a clamping nut.

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