A Coupling Agent Coating Head for Color Doppler Ultrasound Instrument and Its Bracket

Abstract

The present invention belongs to the field of medical devices, and specifically relates to a coupling agent applicator head and its bracket for a color Doppler ultrasound instrument, including a probe body. A fixed shell is fixedly connected to the front end of the probe body. An extrusion mechanism is arranged inside the fixed shell. The extrusion mechanism includes an installation groove which is opened inside the fixed shell. A plurality of connecting springs are fixedly connected to the bottom end of the inner wall of the installation groove. The top end of the connecting spring is fixedly connected to a fixing plate which is fixedly connected to an extrusion plate. The extrusion plate abuts against the bottom end of a hose. The hose is filled with coupling agent, and the top end of the hose abuts against a butting pipe. Through the structural design of the extrusion mechanism, the coupling agent can be smeared on the corresponding inspection area as the probe body moves continuously, so that the coupling agent can be accurately smeared on the skin of the subject. While reducing the waste of the coupling agent, it can also reduce the discomfort brought by the coupling agent to the subject.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and particularly to a coupling agent applicator head for a color Doppler ultrasound instrument and its bracket. Background Art

[0002] When using the probe of a color Doppler ultrasound instrument, it is necessary to apply a coupling agent on the skin or the probe. The coupling agent can exclude the air between the probe and the skin, so that ultrasonic waves can effectively penetrate into the human body and obtain high-quality images.

[0003] According to a coupling agent applicator head for a color Doppler ultrasound instrument and its bracket proposed in the patent document CN201920820595.3, it includes an applicator and a probe. The probe is installed inside the applicator. There are several annular protrusions on the outer shell of the applicator. There are two interconnected vertical protrusions between the annular protrusions. There are two threads at the end of the outer shell near the probe. There are several vertical through grooves on the threads. A tightening ring is sleeved on the threads. A suitable alcohol storage bag is inserted into the annular protrusions and the vertical protrusions. A sealing cap is provided at the liquid inlet of the alcohol storage bag. The liquid outlet pipe on the alcohol storage bag is attached to the through grooves. The volume of the alcohol storage bag in the present utility model is not large, and it does not affect the operation of the color Doppler ultrasound instrument after being filled with alcohol. The total weight of the entire applicator is within the range of controllable and automatic operation. After the applicator head finishes working, it can be disinfected with alcohol to reduce the possibility of cross-infection.

[0004] However, for the coupling agent applicator head and its bracket in the above technology, during the use process, the coupling agent will be applied on the skin surface, and the range of the coupling agent applied on the skin surface is generally large to facilitate the coupling agent to cover the inspection area of the probe. However, the coupling agent is usually quite cold, especially in winter when the temperature is low. Applying the coupling agent over a large area on the skin will cause great discomfort to the subject. Therefore, a coupling agent applicator head for a color Doppler ultrasound instrument and its bracket is proposed for the above problems. Summary of the Invention

[0005] In order to solve the problem that for the coupling agent applicator head and its bracket in the above technology, during the use process, the coupling agent will be applied on the skin surface, and the range of the coupling agent applied on the skin surface is generally large to facilitate the coupling agent to cover the inspection area of the probe. However, the coupling agent is usually quite cold, especially in winter when the temperature is low. Applying the coupling agent over a large area on the skin will cause great discomfort to the subject, the present invention proposes a coupling agent applicator head for a color Doppler ultrasound instrument and its bracket.

[0006] The technical solution adopted by the present invention to solve its technical problems is as follows: A coupling agent applicator head for a color Doppler ultrasound instrument described in the present invention includes a probe body. A fixed shell is fixedly connected to the front end of the probe body. An extrusion mechanism is arranged inside the fixed shell. The extrusion mechanism includes an installation groove opened inside the fixed shell. A plurality of connecting springs are fixedly connected to the bottom end of the inner wall of the installation groove. The top end of the connecting spring is fixedly connected to a fixing plate. The fixing plate is fixedly connected to an extrusion plate. The extrusion plate abuts against the bottom end of a hose. The inside of the hose is filled with coupling agent. The top end of the hose abuts against a butting pipe. The butting pipe is fixedly connected to the inner wall of the installation groove. The butting pipe communicates with a conveying pipe. The top end of the conveying pipe communicates with the outside. The conveying pipe is fixedly connected inside the fixed shell. A convex block is fixedly connected to one group of fixing plates. The convex block abuts against a butting block. The butting block is fixedly connected to a moving block. The moving block is threadedly connected to a threaded rod. The top end of the threaded rod is fixedly connected to a rotating block. The top end of the rotating block and the bottom end of the threaded rod are both rotatably connected to a cover plate. The cover plate is rotatably connected to the fixed shell. A closing mechanism is arranged at the top end of the fixed shell.

[0007] Preferably, the closing mechanism includes a notch opened at the top end of the fixed shell. The notch fits with a baffle plate. Gears are fixedly connected to the left and right sides of the bottom end of the baffle plate. The gears are rotatably connected to the fixed shell. The gears mesh with a rack. The bottom end of the rack is fixedly connected to a connecting rod. A weight block is fixedly connected to the bottom end of the connecting rod. The connecting rod, the weight block and the rack are all slidably connected inside a movable groove. The movable groove is opened at the front end of the fixed shell.

[0008] Preferably, a heating component is arranged inside the fixed shell. The heating component includes a heater. The heater is electrically connected to a display screen through a wire. The display screen is fixedly connected to the fixed shell. The heater is sleeved on the conveying pipe. The heater is fixedly connected inside the fixed shell.

[0009] Preferably, an extension rod is fixedly connected to the weight block. The extension rod is designed in an L shape. The top end of the extension rod is aligned with the movable groove. The movable groove is opened on a rubber pad and the cover plate. The movable groove is fixedly connected to the bottom end of the cover plate.

[0010] Preferably, a plurality of butting frames are fixedly connected to the rear end of the cover plate. The rear ends of the butting frames abut against the surface of the hose.

[0011] Preferably, convex blocks are fixedly connected to the left and right sides of the extrusion plate. A guide rod is inserted inside the convex block. The guide rod is designed in a T shape. The top end of the guide rod is fixedly connected to the inner wall of the installation groove.

[0012] Preferably, three groups of the hoses are provided. A fixing frame is sleeved on the top end of each hose, and the fixing frame is fixedly connected to the inner wall of the installation groove. A moving frame is sleeved on the bottom end of each hose, a pulley is fixedly connected to the moving frame, and the bottom end of the moving frame is fixedly connected to the fixing plate.

[0013] Preferably, a rotating rod is rotatably connected to the top end of the fixed shell, and the top end of the fixed shell is designed in a trapezoidal shape.

[0014] Preferably, a wire groove is formed at the rear end of the fixed shell, a long groove corresponding to the wire groove is formed on the probe body, and a convex block is formed at the rear end of the probe body.

[0015] A coupling agent application head bracket, characterized in that: the bottom end of the fixed shell abuts against a cushion block, the cushion block is fixedly connected to the bracket body, a fixed ring is fixedly connected to the rear end of the bracket body, and a groove is formed at the rear end of the probe body.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. Through the structural design of the extrusion mechanism of the present invention, the coupling agent can be applied to the corresponding inspection area as the probe body moves continuously, so that the coupling agent can be accurately applied to the skin of the subject. While reducing the waste of the coupling agent, it can also reduce the discomfort brought to the subject by the coupling agent, solving the problem that in the prior art, the coupling agent application head and its bracket, during use, the coupling agent will be applied to the skin surface, and the range of the coupling agent applied to the skin surface is generally large, so that the coupling agent can cover the inspection area of the probe, but the coupling agent is usually relatively cold, especially in winter when the temperature is low, and the large-scale application of the coupling agent on the skin will bring greater discomfort to the subject.

[0018] 2. Through the structural design of the closing mechanism of the present invention, when the probe body is used, the counterweight block can slide downward in the movable groove under the action of gravity, and drive the rack to slide downward. The rack is engaged with the gear, so the gear will rotate, and the baffle can be opened as the gear rotates, no longer covering the delivery pipe, and the coupling agent in the delivery pipe can be smoothly poured onto the skin of the subject.

[0019] 3. Through the structural design of the heating component of the present invention, before the coupling agent is extruded through the delivery pipe, the coupling agent inside the delivery pipe will be heated by the heater, so as to increase the temperature of the coupling agent, effectively reduce the discomfort brought to the subject by the coupling agent, and at the same time the heated coupling agent can also improve the conduction performance and fluidity, which helps to improve the accuracy during ultrasonic inspection. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0021] Figure 1 Schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 Schematic diagram of the structure of the delivery pipe of the present invention;

[0023] Figure 3 Schematic diagram of the structure of the probe body of the present invention;

[0024] Figure 4 Schematic diagram of the cross-sectional structure of the fixed shell of the present invention;

[0025] Figure 5 Schematic diagram of the connection structure of the flexible pipe of the present invention;

[0026] Figure 6 Schematic diagram of the structure at the bottom end of the cover plate of the present invention;

[0027] Figure 7 Schematic diagram of the connection structure of the baffle of the present invention;

[0028] Figure 8 Schematic diagram of the connection structure of the connecting spring of the present invention;

[0029] Figure 9 Schematic diagram of the structure of the movable groove of the present invention.

[0030] In the figure: 1, probe body; 20, fixed shell; 21, delivery pipe; 22, abutting pipe; 23, flexible pipe; 24, convex block; 25, pressing plate; 26, fixing plate; 27, connecting spring; 28, connecting block; 29, abutting block; 30, moving block; 31, threaded rod; 32, cover plate; 33, rotating block; 34, notch; 35, baffle; 36, gear; 37, connecting rod; 38, counterweight block; 39, extension rod; 40, rack; 41, movable groove; 42, fixing groove; 43, rubber pad; 44, display screen; 45, heater; 46, wire groove; 47, installation groove; 48, guide rod; 49, moving frame; 50, fixing frame; 51, abutting frame; 52, rotating rod; 60, cushion block; 61, bracket body; 62, fixing ring; 63, groove. Detailed implementation manners

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. Embodiment 1

[0032] Please refer to Figure 1 - Figure 9 As shown in the figure, a coupling agent applicator head for a color Doppler ultrasound instrument includes a probe body 1. A fixed shell 20 is fixedly connected to the front end of the probe body 1. An extrusion mechanism is arranged inside the fixed shell 20. The extrusion mechanism includes an installation groove 47 opened inside the fixed shell 20. A plurality of connecting springs 27 are fixedly connected to the bottom end of the inner wall of the installation groove 47. The top end of the connecting spring 27 is fixedly connected to a fixing plate 26. The fixing plate 26 is fixedly connected to an extrusion plate 25. The extrusion plate 25 abuts against the bottom end of a hose 23. The inside of the hose 23 is filled with a coupling agent. The top end of the hose 23 abuts against a butting pipe 22. The butting pipe 22 is fixedly connected to the inner wall of the installation groove 47. The butting pipe 22 is communicated with a delivery pipe 21. The top end of the delivery pipe 21 is communicated with the outside. The delivery pipe 21 is fixedly connected inside the fixed shell 20. A connecting block 28 is fixedly connected to one group of the fixing plates 26. The connecting block 28 abuts against a butting block 29. The butting block 29 is fixedly connected to a moving block 30. The moving block 30 is threadedly connected to a threaded rod 31. The top end of the threaded rod 31 is fixedly connected to a rotating block 33. The top end of the rotating block 33 and the bottom end of the threaded rod 31 are both rotatably connected to a cover plate 32. The cover plate 32 is rotatably connected to the fixed shell 20. A closing mechanism is arranged at the top end of the fixed shell 20;

[0033] Through the structural design of the extrusion mechanism, the coupling agent can be smeared on the corresponding inspection area as the probe body 1 moves continuously, so that the coupling agent can be accurately smeared on the skin of the subject. While reducing the waste of the coupling agent, it can also reduce the discomfort brought by the coupling agent to the subject. During operation, the fixed shell 20 is fixed on the probe body 1 and can move with the probe body 1. When using the probe body 1, first ensure that the fixed shell 20 is in front of the moving path of the probe body 1. Then, when moving the probe body 1 to inspect the subject, just continuously rotate the rotating block 33 on the cover plate 32, and the coupling agent can flow out from the delivery pipe 21 and be smeared on the skin of the subject. The rotating block 33 is connected to the threaded rod 31. Rotating the rotating block 33 will drive the threaded rod 31 to rotate in the cover plate 32, and the moving block 30 threadedly connected to the threaded rod 31 will continuously move upward. A contact block 29 is fixed on the moving block 30 and abuts against the connecting block 28 through the contact block 29. At this time, the connecting block 28 can be driven to move synchronously through the contact block 29. And when the cover plate 32 is rotated to open the inside of the installation groove 47, the contact block 29 can also be separated from the connecting block 28 smoothly. When the connecting block 28 moves, the extrusion plate 25 will continuously squeeze the hose 23, so as to extrude the coupling agent inside the hose 23 and transport it through the delivery pipe 21. Wherein, a connecting spring 27 is fixed on the fixing plate 26. The connecting spring 27 can provide support for the fixing plate 26 and ensure the contact between the extrusion plate 25 and the hose 23, so that the extrusion operation can be carried out smoothly. The cover plate 32 is rotatably connected to the fixed shell 20. Under normal circumstances, the cover plate 32 is in a closed state. At the same time, the inside of the installation groove 47 can be opened by rotating the cover plate 32 to replace the hose 23 inside the installation groove 47. The moving block 30 is designed in a rectangular shape, and a groove corresponding to the moving block 30 is opened at the rear end of the cover plate 32 to ensure the normal movement of the moving block 30 in the cover plate 32. The top end of the hose 23 abuts against the abutting pipe 22. When the extrusion plate 25 squeezes the hose 23, the side of the hose 23 away from the extrusion plate 25 can be supported by the abutting pipe 22.

[0034] Further, the closing mechanism includes a notch 34. The notch 34 is opened at the top end of the fixed shell 20. The notch 34 fits with a baffle 35. The left and right sides of the bottom end of the baffle 35 are both fixedly connected to a gear 36. The gear 36 is rotatably connected to the fixed shell 20. The gear 36 meshes with a rack 40. The bottom end of the rack 40 is fixedly connected to a connecting rod 37. The bottom end of the connecting rod 37 is fixedly connected to a counterweight 38. The connecting rod 37, the counterweight 38 and the rack 40 are all slidably connected inside a moving groove 41. The moving groove 41 is opened at the front end of the fixed shell 20;

[0035] Through the structural design of the closing mechanism, when the probe body 1 is in use, the counterweight 38 can slide downward inside the movable slot 41 under the action of gravity, and drive the rack 40 to slide downward. The rack 40 is engaged with the gear 36. Therefore, the gear 36 will rotate, and the baffle 35 can be opened as the gear 36 rotates, no longer covering the delivery pipe 21. The coupling agent in the delivery pipe 21 can then be smoothly poured onto the skin of the subject. During operation, when the probe body 1 is in use, the probe body 1 needs to be inverted first. At this time, under the action of gravity, the counterweight 38 will slide downward inside the movable slot 41. The rack 40 is connected to the counterweight 38 through the connecting rod 37. Therefore, the rack 40 will also slide in the movable slot 41. Since the rack 40 is engaged with the gear 36, when the rack 40 moves, it will drive the gear 36 to rotate. The gear 36 is connected to the bottom end of the baffle 35, and the baffle 35 will rotate by a certain angle, so that the originally blocked delivery pipe 21 can be exposed. At this time, the coupling agent in the delivery pipe 21 can be smoothly applied to the skin of the subject. Among them, a notch 34 is opened on the fixed shell 20, and the size of the notch 34 is adapted to the baffle 35, so that when the baffle 35 is closed, it can fit against the inner wall of the notch 34 to improve the shielding effect on the delivery pipe 21.

[0036] Furthermore, a heating component is provided inside the fixed shell 20. The heating component includes a heater 45. The heater 45 is electrically connected to the display screen 44 through a wire. The display screen 44 is fixedly connected to the fixed shell 20. The heater 45 is sleeved on the delivery pipe 21, and the heater 45 is fixedly connected inside the fixed shell 20;

[0037] Through the structural design of the heating component, before the coupling agent is extruded through the delivery pipe 21, the heater 45 will heat the coupling agent inside the delivery pipe 21 to facilitate increasing the temperature of the coupling agent, effectively reducing the discomfort brought to the subject by the coupling agent. At the same time, the heated coupling agent can also improve the conduction performance and fluidity, which helps to improve the accuracy during ultrasonic examination. During operation, when the coupling agent inside the hose 23 is extruded, the coupling agent will be transported through the delivery pipe 21. A heater 45 is sleeved on the delivery pipe 21, and the heater 45 can heat the coupling agent inside the delivery pipe 21, so that when the coupling agent is applied to the skin surface, it will not be too cold. The heater 45 is connected to the display screen 44 through a wire, and the temperature of the heater 45 can be adjusted through the display screen 44.

[0038] Furthermore, an extension rod 39 is fixedly connected to the counterweight 38. The extension rod 39 is designed in an L shape. The top end of the extension rod 39 is aligned with the fixed slot 42. The fixed slot 42 is opened on the rubber pad 43 and the cover plate 32, and the fixed slot 42 is fixedly connected to the bottom end of the cover plate 32;

[0039] During operation, a rubber pad 43 is fixed on the cover plate 32 to increase the friction force with the fixed shell 20 through the deformation of the rubber pad 43, making it difficult to open the cover plate 32, and a relatively large frictional resistance needs to be overcome when opening the cover plate 32. Fixing grooves 42 are provided on both the cover plate 32 and the rubber pad 43. The fixing grooves 42 penetrate through the rubber pad 43 and extend into the interior of the cover plate 32. When using the probe body 1, the downward movement of the counterweight 38 will drive the extension rod 39 to move downward synchronously, and the extension rod 39 can be inserted into the fixing groove 42. At this time, the extension rod 39 abuts against the inner wall of the fixing groove 42, and the cover plate 32 will be fixed to ensure that the cover plate 32 will not be opened due to an external pulling force during the use of the probe body 1.

[0040] Furthermore, a plurality of abutting frames 51 are fixedly connected to the rear end of the cover plate 32, and the rear ends of the abutting frames 51 abut against the surface of the hose 23.

[0041] During operation, a plurality of abutting frames 51 are fixed to the rear end of the cover plate 32, and the overall shape of the abutting frame 51 located in the middle of the cover plate 32 is different from that of the abutting frames 51 on both sides, ensuring that the abutting frame 51 in the middle will not interfere with the movement of the moving block 30, enabling the moving block 30 to move normally on the threaded rod 31. The abutting frames 51 can support and fix the hose 23 inside the installation groove 47 when the cover plate 32 is closed.

[0042] Furthermore, convex blocks 24 are fixedly connected to both the left and right sides of the pressing plate 25. A guide rod 48 is inserted into the convex block 24. The guide rod 48 is designed in a T shape, and the top end of the guide rod 48 is fixedly connected to the inner wall of the installation groove 47.

[0043] During operation, the convex blocks 24 are fixed on both the left and right sides of the pressing plate 25, and the guide rod 48 is inserted into the interior, so as to guide the movement of the pressing plate 25 through the guide rod 48, ensuring that the pressing plate 25 can move stably along the vertical direction without shaking easily.

[0044] Furthermore, three hoses 23 are provided. A fixing frame 50 is sleeved on the top end of the hose 23, and the fixing frame 50 is fixedly connected to the inner wall of the installation groove 47. A moving frame 49 is sleeved on the bottom end of the hose 23. A pulley is fixedly connected to the moving frame 49, and the bottom end of the moving frame 49 is fixedly connected to the fixing plate 26.

[0045] During operation, a fixing frame 50 is sleeved on the top end of the hose 23 to support and fix the top end of the hose 23. A moving frame 49 is sleeved on the bottom end of the hose 23. A pulley is fixed on the moving frame 49 and contacts the inner wall of the installation groove 47. The moving frame 49 is connected to the fixing plate 26 and will move synchronously with the fixing plate 26, providing support for the bottom end of the hose 23.

[0046] Further, a rotating rod 52 is rotatably connected to the top end of the fixed housing 20, and the top end of the fixed housing 20 is trapezoidally designed;

[0047] During operation, the rotating rod 52 rotates on the top end of the fixed housing 20 and the top end of the fixed housing 20 is trapezoidally designed. The rotating rod 52 can contact the skin of the subject and rotate when the probe body 1 moves. When the coupling agent flows along the inclined surface of the fixed housing 20 to the rotating rod 52, the rotating rod 52 can evenly apply the coupling agent on the skin of the subject by rotating.

[0048] Further, a wire groove 46 is formed at the rear end of the fixed housing 20, a long groove corresponding to the wire groove 46 is formed on the probe body 1, and a convex block 24 is formed at the rear end of the probe body 1;

[0049] During operation, the wire groove 46 is formed at the rear end of the fixed housing 20, and a corresponding long groove is also formed on the probe body 1, so that the power cord of the heater 45 can be smoothly led out, and at the same time, the power cord of the heater 45 can be fixed.

[0050] A coupling agent application head support, characterized in that: the bottom end of the fixed housing 20 abuts against a cushion block 60, the cushion block 60 is fixedly connected to a support body 61, a fixing ring 62 is fixedly connected to the rear end of the support body 61, and a groove 63 is formed at the rear end of the probe body 1;

[0051] During operation, the bottom end of the fixed housing 20 abuts against the cushion block 60, so as to support the fixed housing 20 through the cushion block 60, and both sides of the support body 61 can also support the side of the fixed housing 20. A fixing ring 62 is also fixed on the fixed housing 20, and the fixing ring 62 is used to support and fix the probe body 1. A groove 63 is formed on the probe body 1, so that when the probe body 1 is used, the probe body 1 and the fixed housing 20 can be held through the groove 63.

[0052] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A coupling agent applicator head for a color Doppler ultrasound instrument, comprising a probe body (1), and a fixed shell (20) fixedly connected to the front end of the probe body (1), characterized in that: An extrusion mechanism is provided inside the fixed shell (20). The extrusion mechanism includes an installation groove (47) which is opened inside the fixed shell (20). A plurality of connecting springs (27) are fixedly connected to the bottom end of the inner wall of the installation groove (47). The top end of the connecting spring (27) is fixedly connected to a fixing plate (26). The fixing plate (26) is fixedly connected to an extrusion plate (25). The extrusion plate (25) abuts against the bottom end of a hose (23). The inside of the hose (23) is filled with a coupling agent. The top end of the hose (23) abuts against a butting pipe (22). The butting pipe (22) is fixedly connected to the inner wall of the installation groove (47). The butting pipe (22) is communicated with a delivery pipe (21). The top end of the delivery pipe (21) is communicated with the outside. The delivery pipe (21) is fixedly connected inside the fixed shell (20). A connecting block (28) is fixedly connected to one set of the fixing plates (26). The connecting block (28) abuts against a butting block (29). The butting block (29) is fixedly connected to a moving block (30). The moving block (30) is threadedly connected to a threaded rod (31). The top end of the threaded rod (31) is fixedly connected to a rotating block (33). The top end of the rotating block (33) and the bottom end of the threaded rod (31) are both rotatably connected to a cover plate (32). The cover plate (32) is rotatably connected to the fixed shell (20). A closing mechanism is provided at the top end of the fixed shell (20). The closing mechanism includes a notch (34) which is opened at the top end of the fixed shell (20). The notch (34) is fitted with a baffle (35). Gears (36) are fixedly connected to the left and right sides of the bottom end of the baffle (35). The gears (36) are rotatably connected to the fixed shell (20). The gears (36) are engaged with a rack (40). The bottom end of the rack (40) is fixedly connected to a connecting rod (37). A counterweight (38) is fixedly connected to the bottom end of the connecting rod (37). The connecting rod (37), the counterweight (38) and the rack (40) are all slidably connected inside a moving groove (41). The moving groove (41) is opened at the front end of the fixed shell (20).

2. The coupling agent applicator head for a color Doppler ultrasound instrument according to claim 1, wherein: A heating component is provided inside the fixed shell (20). The heating component includes a heater (45). The heater (45) is electrically connected to a display screen (44) through a wire. The display screen (44) is fixedly connected to the fixed shell (20). The heater (45) is sleeved on the delivery pipe (21). The heater (45) is fixedly connected inside the fixed shell (20).

3. The coupling agent applicator head for a color Doppler ultrasound instrument according to claim 1, characterized in that: An extension rod (39) is fixedly connected to the counterweight (38). The extension rod (39) is designed in an L shape. The top end of the extension rod (39) is aligned with a fixed groove (42). The fixed groove (42) is opened on a rubber pad (43) and the cover plate (32). The fixed groove (42) is fixedly connected to the bottom end of the cover plate (32).

4. The coupling agent applicator head for a color Doppler ultrasound instrument according to claim 3, characterized in that: The rear end of the cover plate (32) is fixedly connected with multiple abutting frames (51), and the rear end of the abutting frame (51) abuts against the surface of the hose (23).

5. The coupling agent applicator head for a color Doppler ultrasound instrument according to claim 1, characterized in that: Both the left and right sides of the pressing plate (25) are fixedly connected with bumps (24), a guide rod (48) is inserted into the interior of the bump (24), the guide rod (48) is designed in a T shape, and the top end of the guide rod (48) is fixedly connected with the inner wall of the installation groove (47).

6. The couplant applicator head for a color Doppler ultrasound instrument according to claim 4, characterized in that: There are three groups of hoses (23), a fixing frame (50) is sleeved on the top end of the hose (23), the fixing frame (50) is fixedly connected to the inner wall of the installation groove (47), a moving frame (49) is sleeved on the bottom end of the hose (23), a pulley is fixedly connected to the moving frame (49), and the bottom end of the moving frame (49) is fixedly connected to the fixing plate (26).

7. The coupling agent applicator head for a color Doppler ultrasound instrument according to claim 2, characterized in that: A rotating rod (52) is rotatably connected to the top end of the fixed shell (20), and the top end of the fixed shell (20) is designed in a trapezoid shape.

8. The coupling agent applicator head for a color Doppler ultrasound instrument according to claim 1, characterized in that: A wire groove (46) is opened at the rear end of the fixed shell (20), a long groove corresponding to the wire groove (46) is opened on the probe body (1), and a bump (24) is opened at the rear end of the probe body (1).

9. A coupling agent applicator head bracket, comprising a coupling agent applicator head for a color Doppler ultrasound diagnostic instrument according to any one of claims 1-8, characterized in that: The bottom end of the fixed shell (20) abuts against the cushion block (60), the cushion block (60) is fixedly connected to the bracket body (61), a fixing ring (62) is fixedly connected to the rear end of the bracket body (61), and a groove (63) is opened at the rear end of the probe body (1).

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