Handheld intraocular pressure instrument

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a handheld intraocular pressure instrument which comprises a shell with a holding portion and a detection probe arranged on the front side wall of the middle of the shell, the front side wall of the shell is connected with a supporting abutting rod in an inward-outward telescopic or sliding mode, and the supporting abutting rod is parallel to the detection probe. The shell is provided with a control piece used for controlling the supporting abutting rod to stretch out and draw back or slide inwards and outwards. The intraocular pressure measuring device is simple in structure, reasonable in design and low in cost, the supporting abutting rod which can stretch out and draw back or slide inwards and outwards is adopted, the length of the supporting abutting rod can be adjusted according to the actual condition of the face shape of a patient, and the intraocular pressure measuring device can be used conveniently.

Description

Technical field:

[0001] The utility model belongs to the technical field of medical equipment, in particular to a handheld intraocular pressure meter. Background technology:

[0002] The rebound tonometer, also known as a dynamic tonometer or impact tonometer, uses an innovative patented induction rebound technology. After the probe is inserted into the tonometer, it is magnetized to produce an N / S pole. The instantaneous current in the solenoid inside the instrument (lasting about 30 milliseconds) generates an instantaneous magnetic field, causing the magnetized probe to move toward the cornea at a speed of 0.2 m / s (the principle of like poles repelling each other). The probe hits the front surface of the cornea, decelerates, and rebounds. The control switch monitors the solenoid voltage caused by the rebounding magnetized probe. The electronic signal processor and microsensor calculate the deceleration of the probe after it hits the cornea, and finally converts the integrated information into an intraocular pressure reading. The tonometer can obtain a measurement within 0.1 seconds. If the intraocular pressure increases, the deceleration of the probe after the impact increases, and the duration of the impact is shortened.

[0003] In actual use, the existing handheld rebound tonometer uses a fixed rod to rest against the patient's forehead as a support point, so that the detection probe can maintain a certain distance from the patient's eyeball for measurement. However, since the length of the fixed rod is fixed and the patient's face shape is necessarily different, the tonometer can only be tilted according to the actual situation to keep the detection probe and the patient's eyeball at a certain distance for measurement, which is more troublesome to use. Summary of the invention:

[0004] The utility model aims to provide a handheld tonometer, which adopts a supporting rod that can be telescoped or slid inward and outward, so that the length of the supporting rod can be adjusted according to the actual face shape of the patient, so as to facilitate the measurement and use of the tonometer.

[0005] The utility model is achieved in this way:

[0006] A handheld tonometer comprises a shell with a grip portion, and a detection probe arranged on the front side wall in the middle of the shell, the front side wall of the shell is connected with a support rod along the inner and outer telescopic or sliding connection, the support rod is parallel to the detection probe, and the shell is provided with a control part for controlling the inner and outer telescopic or sliding connection of the support rod.

[0007] In the above-mentioned handheld tonometer, an adjustment screw is rotatably connected in the shell, and a threaded adjustment hole is opened at the inner end of the support rod along its axial direction. The support rod is threaded on the adjustment screw through the threaded adjustment hole, and the adjustment screw is provided with a knob which is partially or completely located outside the shell, and the knob is the control part.

[0008] In the above-mentioned handheld tonometer, the knob includes a linkage sleeve mounted on the adjusting screw, radial connecting holes are provided on the linkage sleeve and the adjusting screw, the tail end of the fastener is connected through the radial connecting holes of the linkage sleeve and the adjusting screw, and a rubber sleeve is circumferentially fixed on the outer ring wall of the linkage sleeve.

[0009] In the above-mentioned handheld tonometer, an annular groove is provided on the outer ring wall of the linkage ring sleeve, the radial connecting hole is provided on the groove bottom surface of the annular groove, a plurality of positioning opening grooves are provided in the circumferential direction of the radial groove, and an annular assembly protrusion which can be inserted into the annular groove and a positioning assembly protrusion which can be inserted into the positioning opening groove are provided on the inner ring wall of the rubber sleeve.

[0010] In the above-mentioned handheld tonometer, a movable hole is provided on the shell for the support rod to extend or slide inward and outward, and the outer wall surface of the support rod located inside the shell extends outward to form an annular protrusion with an outer diameter larger than the aperture of the movable hole, and an adjustment stroke is formed between the annular protrusion and the inner port of the movable hole.

[0011] In the above-mentioned handheld tonometer, the support rod is located directly above the detection probe, and the support rod is used to rest against the forehead of the human body, and the gripping portion is the lower part of the shell.

[0012] The outstanding advantages of the utility model compared with the prior art are:

[0013] The utility model has a simple structure, reasonable design and low cost, and adopts a supporting rod that can be telescoped or slid inward and outward, so that the length of the supporting rod can be adjusted according to the actual face shape of the patient, so as to facilitate the measurement of the tonometer. Description of the drawings:

[0014] Figure 1 It is an overall stereogram of the utility model;

[0015] Figure 2 It is a partial cross-sectional view of the utility model;

[0016] Figure 3 It is an exploded view of the support rod and the control member of the utility model.

[0017] In the figure: 1. Shell; 2. Grip; 3. Detection probe; 4. Support rod; 5. Control member; 6. Adjustment screw; 7. Linkage ring sleeve; 8. Radial connecting hole; 9. Rubber sleeve; 10. Annular groove; 11. Positioning opening groove; 12. Annular assembly protrusion; 13. Positioning assembly protrusion; 14. Annular protrusion. Specific implementation method:

[0018] The present invention is further described below with reference to specific embodiments. Figure 1 —3:

[0019] A handheld tonometer comprises a shell 1 with a grip portion 2, and a detection probe 3 arranged on the front side wall of the middle part of the shell 1, the front side wall of the shell 1 is connected with a support rod 4 along the inner and outer telescopic or sliding connection, the support rod 4 is parallel to the detection probe 3, and the shell 1 is provided with a control part 5 for controlling the inner and outer telescopic or sliding connection of the support rod 4.

[0020] The utility model has a simple structure, reasonable design and low cost, and adopts a support rod 4 that can be telescoped or slid inward and outward, so that the length of the support rod 4 can be adjusted according to the actual face shape of the patient, so as to facilitate the measurement of the tonometer.

[0021] Furthermore, the support rod 4 can be electrically driven directly by a servo motor driving a screw, and its control part 5 is a control button that can control the start and stop of the servo motor. In the present embodiment, an adjusting screw 6 is rotatably connected in the shell 1, and a threaded adjustment hole is provided at the inner end of the support rod 4 along its axial direction. The support rod 4 is threaded on the adjusting screw 6 through the threaded adjustment hole, and the adjusting screw 6 is provided with a knob that is partially or completely located outside the shell 1, and the knob is the control part 5.

[0022] In order to enable the knob to stably drive the rotation of the adjusting screw 6 to ensure the accuracy of the adjustment, the knob includes a linkage ring sleeve 7 mounted on the adjusting screw 6, and radial connecting holes 8 are provided on the linkage ring sleeve 7 and the adjusting screw 6. The tail end of the fastener is connected through the radial connecting holes 8 of the linkage sleeve and the adjusting screw 6, and a rubber sleeve 9 is circumferentially fixed on the outer ring wall of the linkage ring sleeve 7.

[0023] At the same time, the assembly structure between the rubber sleeve 9 and the linkage ring sleeve 7 is as follows: an annular groove 10 is provided on the outer ring wall of the linkage ring sleeve 7, the radial connecting hole 8 is provided on the groove bottom surface of the annular groove 10, and a plurality of positioning opening grooves 11 are provided in the circumferential direction of the radial groove; an annular assembly protrusion 12 which can be inserted into the annular groove 10, and a positioning assembly protrusion 13 which can be inserted into the positioning opening groove 11 are provided on the inner ring wall of the rubber sleeve 9.

[0024] In addition, in order to prevent the support rod 4 from extending outward too much and causing the support rod 4 to fall out of the shell 1, a movable hole is opened on the shell 1 for the support rod 4 to extend or slide inward and outward, and the outer wall surface of the support rod 4 located inside the shell 1 extends outward to form an annular protrusion 14 with an outer diameter larger than the aperture of the movable hole, and an adjustment stroke is formed between the annular protrusion 14 and the inner port of the movable hole.

[0025] Furthermore, in the present embodiment, the support rod 4 is located directly above the detection probe 3 , and the support rod 4 is used to rest against the forehead of a human body, and the gripping portion 2 is the lower portion of the shell 1 .

[0026] The above embodiment is only one of the preferred embodiments of the present utility model, and is not intended to limit the scope of implementation of the present utility model. Therefore, any equivalent changes made based on the shape, structure, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A handheld tonometer, comprising a housing (1) having a grip portion (2), and a detection probe (3) arranged on the front side wall of the middle portion of the housing (1), characterized in that: The front side wall of the shell (1) is connected to a support rod (4) in an inward and outward telescopic or sliding manner, the support rod (4) is parallel to the detection probe (3), and a control member (5) for controlling the inward and outward telescopic or sliding movement of the support rod (4) is provided on the shell (1).

2. A handheld tonometer according to claim 1, characterized in that: An adjusting screw (6) is rotatably connected inside the housing (1), a threaded adjustment hole is provided at the inner end of the supporting rod (4) along its axial direction, the supporting rod (4) is threadedly connected to the adjusting screw (6) through the threaded adjustment hole, and a knob partially or completely located outside the housing (1) is sleeved on the adjusting screw (6), and the knob is the control member (5).

3. A handheld tonometer according to claim 2, characterized in that: The knob comprises a linkage sleeve (7) sleeved on the adjusting screw (6), radial connection holes (8) are provided on the linkage sleeve (7) and the adjusting screw (6), the tail end of the fastener is connected through the radial connection holes (8) of the linkage sleeve and the adjusting screw (6), and a rubber sleeve (9) is circumferentially fixed on the outer ring wall of the linkage sleeve (7).

4. A handheld tonometer according to claim 3, characterized in that: An annular groove (10) is provided on the outer ring wall of the linkage ring sleeve (7), the radial connection hole (8) is provided on the groove bottom surface of the annular groove (10), a plurality of positioning opening grooves (11) are provided in the circumferential direction of the radial groove, and an annular assembly protrusion (12) which can be inserted into the annular groove (10) and a positioning assembly protrusion (13) which can be inserted into the positioning opening groove (11) are provided on the inner ring wall of the rubber sleeve (9).

5. A handheld tonometer according to claim 1, characterized in that: The shell (1) is provided with a movable hole for the support rod (4) to extend or slide inward and outward, and the outer wall surface of the support rod (4) located inside the shell (1) extends outward to form an annular protrusion (14) with an outer diameter larger than the diameter of the movable hole, and an adjustment stroke is formed between the annular protrusion (14) and the inner end of the movable hole.

6. A handheld tonometer according to claim 1, 2 or 5, characterized in that: The support rod (4) is located directly above the detection probe (3), and the support rod (4) is used to abut against the forehead of a human body, and the gripping portion (2) is the lower portion of the shell (1).

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