Auxiliary device for Valsalva test

Abstract

The utility model discloses an auxiliary device for a Valsalva test, comprising a syringe, wherein the syringe comprises a syringe barrel and a piston assembly, one end of the syringe barrel is provided with a needle, the piston assembly extends into the syringe barrel from the other end of the syringe barrel and slidably cooperates with the syringe barrel, one end of the syringe barrel is provided with a detachable mouthpiece, a through hole is provided at the center of the mouthpiece, the needle extends into the through hole, and the mouthpiece is used to be contained in the patient's mouth; the advantage is that it helps to improve the test effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and in particular relates to an auxiliary device for a Valsalva test. Background Art

[0002] The Valsalva test is a clinical physiological test in which a patient performs a forceful breath-holding maneuver to increase intrathoracic pressure, thereby affecting blood circulation and autonomic nervous system function, thereby achieving diagnostic and therapeutic purposes. Due to its ease of use, practicality, and non-invasive nature, the Valsalva test is widely used clinically.

[0003] The specific steps of the Valsalva test are: the patient first takes a deep breath, then closes the mouth and nose, then exhales forcefully, and finally relaxes and resumes normal breathing. During the exhalation phase, a conventional syringe is generally used, with the patient's lips pressed against the needle of the syringe. The exhaled air passes through the needle of the syringe and enters the syringe barrel, pushing the piston rod backward. During this process, it is necessary to ensure that the exhaled air does not leak between the lips and the syringe.

[0004] Because conventional syringe needles are thinner, it is difficult to ensure that gas does not leak when the patient exhales, which may cause the increased intrathoracic pressure to fail to reach the expected level, ultimately affecting the test results. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an auxiliary device for Valsalva test, which helps to improve the test effect.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: an auxiliary device for a Valsalva test, comprising a syringe, the syringe comprising a syringe and a piston assembly, a needle being provided at one end of the syringe, the piston assembly extending into the syringe from the other end of the syringe and slidingly cooperating with the syringe, a detachable mouthpiece being provided at one end of the syringe, a through hole being provided at the center of the mouthpiece, the needle extending into the through hole, and the mouthpiece being intended to be held in the patient's mouth.

[0007] Preferably, the mouthpiece comprises a duckbill-shaped profiling block, and the through hole is arranged at the center of the profiling block.

[0008] Preferably, a locking piece is provided at one end of the profiling block facing the syringe, and the profiling block is locked with the syringe via the locking piece.

[0009] Preferably, the other end of the syringe protrudes outward in a circumferential direction to form a baffle, and the locking member includes a sleeve and a limit plate. The sleeve surrounds the through hole, and one end of the sleeve is fixedly connected to the contour block. A detachable ring is provided on the outside of the sleeve, and the ring is fixedly connected to the limit plate through a connecting rod. The limit plate is pressed toward one end of the ring on the end of the baffle away from the ring.

[0010] Preferably, the outer side surface of the sleeve is provided with an external thread, the inner side surface of the collar is provided with an internal thread, and the collar is threadedly connected to the sleeve.

[0011] Preferably, the limit plate is arranged in an annular shape, and one end of the collar is fixedly connected to the limit plate via a plurality of connecting rods, and the plurality of connecting rods are distributed at equal intervals along the circumferential direction.

[0012] Preferably, a sealing ring is provided in the sleeve, and the sealing ring is filled between the inner wall of the sleeve and the outer wall of the syringe, and one end of the sealing ring abuts against the end of the profiling block facing the syringe.

[0013] Preferably, the piston assembly includes a piston rod, one end of which extends into the syringe, one end of the piston rod is integrally provided with a mounting plate, the end of the mounting plate away from the piston rod is provided with a piston, and the other end of the piston rod is integrally provided with a pressure plate.

[0014] Preferably, a socket and a limiting strip are fixedly provided on the limiting plate, a socket is provided with a jack, the limiting strip passes through the jack, and the limiting strip is used to prevent the mounting plate from separating from the syringe.

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] 1. A mouthpiece is provided at one end of the syringe, which is used to be held in the patient's mouth and fits tightly with the patient's mouth, ensuring that gas does not leak during exhalation, thereby ensuring that the increased intrathoracic pressure reaches the expected level, which helps to improve the test effect;

[0017] 2. Compared with a tiny needle, the mouthpiece is easier to fit tightly with the patient's mouth, improving the patient's comfort during the test and reducing discomfort;

[0018] 3. The mouthpiece and syringe are detachably connected, easy to use, replace and clean, and meet the non-invasive and simple requirements of the Valsalva test. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of the explosion structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model Figure 1 ;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the utility model Figure 2 ;

[0023] Figure 5 This is a schematic structural diagram of the piston assembly in the present invention;

[0024] Figure 6 for Figure 3 Enlarged schematic diagram of point A in the middle.

[0025] In the figure: 1. syringe; 11. syringe barrel; 111. baffle; 12. piston assembly; 121. piston rod; 122. mounting plate; 123. piston; 124. pressure plate; 13. needle; 2. mouthpiece; 21. contour block; 211. through hole; 22. connecting plate; 3. locking piece; 31. sleeve; 32. limit plate; 33. collar; 34. connecting rod; 35. socket; 351. jack; 36. limit strip; 4. sealing ring. DETAILED DESCRIPTION

[0026] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0027] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0028] Example 1: Figures 1 to 3 As shown, an auxiliary device for a Valsalva test includes a syringe 1, which includes a syringe 1 and a piston assembly 12. A needle 13 is provided at one end of the syringe 11, and the piston assembly 12 extends into the syringe 11 from the other end of the syringe 11 and slidably cooperates with the syringe 11. A detachable mouthpiece 2 is provided at one end of the syringe 11, and a through hole 211 is provided at the center of the mouthpiece 2. The needle 13 extends into the through hole 211, and the mouthpiece 2 is used to be held in the patient's mouth.

[0029] In this embodiment, the mouthpiece 2 includes a duckbill-shaped profiling block 21 , and the through hole 211 is provided at the center of the profiling block 21 . The duckbill-shaped profiling block 21 is more suitable for a human mouth.

[0030] In this embodiment, a locking piece 3 is provided at one end of the profiling block 21 facing the syringe 11. The profiling block 21 is locked with the syringe 11 through the locking piece 3 to prevent the syringe 1 and the mouthpiece 2 from separating during the blowing process, thereby improving reliability.

[0031] Example 2: Figure 2 and Figure 3 As shown, the rest of the parts are the same as those in the first embodiment, except that the other end of the syringe 11 protrudes outward in the circumferential direction to form a baffle 111. The baffle 111 serves as a gripping point and is a conventional structure of the syringe 1. When using the syringe 1, the thumb usually pushes the piston assembly 12, while the remaining fingers can press against the baffle 111 to provide a reaction force, ensuring that the liquid is pushed or extracted smoothly and evenly.

[0032] In this embodiment, the locking member 3 includes a sleeve 31 and a limiting plate 32. The sleeve 31 surrounds the through hole 211. One end of the sleeve 31 is fixedly connected to the contour block 21. A detachable ring 33 is provided on the outer side of the sleeve 31. The ring 33 is fixedly connected to the limiting plate 32 through a connecting rod 34. The limiting plate 32 is pressed against the end of the baffle 111 away from the ring 33 toward one end of the ring 33.

[0033] In this embodiment, the outer side surface of the sleeve 31 is provided with an external thread, and the inner side surface of the ring 33 is provided with an internal thread. The ring 33 is threadedly connected to the sleeve 31, which is simple to connect, easy to operate, and has good stability.

[0034] Example 3: Figure 2 and Figure 4 As shown, the rest of the parts are the same as those in Example 2, except that the limit plate 32 is arranged in an annular shape, and one end of the ring 33 is fixedly connected to the limit plate 32 through a plurality of connecting rods 34. The plurality of connecting rods 34 are evenly spaced along the circumferential direction, and there is a gap between two adjacent connecting rods 34, which makes it convenient for medical staff to observe the displacement of the piston assembly 12.

[0035] In this embodiment, a sealing ring 4 is provided in the sleeve 31. The sealing ring 4 is filled between the inner wall of the sleeve 31 and the outer wall of the syringe 11. One end of the sealing ring 4 abuts against the end of the profiling block 21 facing the syringe 11 to avoid gas leakage and help improve the sealing effect.

[0036] Example 4: Figure 3 、 Figure 5 and Figure 6 As shown, the rest of the parts are the same as those in Example 2, except that the piston assembly 12 includes a piston rod 121, one end of the piston rod 121 extends into the syringe 11, one end of the piston rod 121 is integrally provided with a mounting plate 122, the end of the mounting plate 122 away from the piston rod 121 is provided with a piston 123, and the other end of the piston rod 121 is integrally provided with a pressure plate 124.

[0037] In this embodiment, a socket 35 and a limiting strip 36 are fixedly provided on the limiting plate 32. The socket 35 is provided with an insertion hole 351. The limiting strip 36 passes through the insertion hole 351. The limiting strip 36 is used to prevent the mounting plate 122 from being separated from the syringe 11. Specifically, when the limiting strip 36 extends to the extension direction of the other end of the syringe 11, the mounting plate 122 will abut against the limiting strip 36 during the outward movement, and the limiting strip 36 prevents the mounting plate 122 from being separated from the syringe 11, which provides better safety.

[0038] The above is an exemplary description of the present invention in conjunction with the accompanying drawings. It is obvious that the implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. An auxiliary device for a Valsalva test, comprising a syringe (1), the syringe (1) comprising a syringe (11) and a piston assembly (12), one end of the syringe (11) being provided with a needle (13), the piston assembly (12) extending from the other end of the syringe (11) into the syringe (11) and slidably cooperating with the syringe (11), characterized in that A detachable mouthpiece (2) is provided at one end of the syringe (11), a through hole (211) is provided at the center of the mouthpiece (2), the needle (13) extends into the through hole (211), and the mouthpiece (2) is used to be contained in the patient's mouth; The blowing nozzle (2) comprises a duckbill-shaped profiling block (21), and the through hole (211) is arranged at the center position of the profiling block (21).

2. An auxiliary device for Valsalva test according to claim 1, characterized in that A locking piece (3) is provided at one end of the profiling block (21) facing the syringe (11), and the profiling block (21) is locked and matched with the syringe (11) through the locking piece (3).

3. An auxiliary device for Valsalva test according to claim 2, characterized in that The other end of the needle cylinder (11) protrudes outwards in the circumferential direction to form a baffle (111). The locking member (3) comprises a sleeve (31) and a limiting plate (32). The sleeve (31) surrounds the through hole (211). One end of the sleeve (31) is fixedly connected to the profiling block (21). A detachable collar (33) is arranged on the outer side of the sleeve (31). The collar (33) is fixedly connected to the limiting plate (32) via a connecting rod (34). One end of the limiting plate (32) facing the collar (33) is pressed against an end of the baffle (111) away from the collar (33).

4. An auxiliary device for Valsalva test according to claim 3, characterized in that The outer side surface of the sleeve (31) is provided with an external thread, the inner side surface of the collar (33) is provided with an internal thread, and the collar (33) is threadedly connected to the sleeve (31).

5. An auxiliary device for Valsalva test according to claim 3, characterized in that The limiting plate (32) is arranged in an annular shape, and one end of the collar (33) is fixedly connected to the limiting plate (32) via a plurality of connecting rods (34), wherein the plurality of connecting rods (34) are distributed at equal intervals along the circumferential direction.

6. An auxiliary device for Valsalva test according to claim 3, characterized in that A sealing ring (4) is arranged inside the sleeve (31), and the sealing ring (4) is filled between the inner wall of the sleeve (31) and the outer wall of the syringe (11), and one end of the sealing ring (4) abuts against one end of the profiling block (21) facing the syringe (11).

7. An auxiliary device for Valsalva test according to claim 3, characterized in that The piston assembly (12) comprises a piston rod (121), one end of the piston rod (121) extends into the syringe (11), one end of the piston rod (121) is integrally provided with a mounting plate (122), an end of the mounting plate (122) away from the piston rod (121) is provided with a piston (123), and the other end of the piston rod (121) is integrally provided with a pressure plate (124).

8. An auxiliary device for Valsalva test according to claim 7, characterized in that The limiting plate (32) is fixedly provided with a socket (35) and a limiting strip (36); the socket (35) is provided with a plug hole (351); the limiting strip (36) penetrates the plug hole (351); and the limiting strip (36) is used to prevent the mounting plate (122) from being separated from the syringe (11).

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