Administration rod for filling tooth with resin

Abstract

The utility model discloses a medicine feeding rod for filling tooth resin. The medicine feeding rod comprises a shell, a first sleeve, a medicine storage tank, a conveying pipe, a medicine feeding device and a pressing handle, the dosing device is arranged in the shell, and the first sleeve is connected with the shell and communicated with the interior of the shell; the medicine storage tank is connected with the shell, and the pressing handle is hinged to the upper surface of the shell; the dosing device comprises a cavity, a piston, a pressing rod, a first spring, a medicine inlet pipe, a medicine outlet pipe, a first one-way valve and a second one-way valve. According to the utility model, the phenomenon of slippage between the palm and the shell or the pressing handle is effectively avoided. According to the design, ergonomics of operation is considered, medical staff can conveniently hold the shell and the pressing handle at the same time for operation, hand fatigue is reduced, and the risk of slipping in the operation process is remarkably reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a drug delivery rod for dental resin filling. Background Art

[0002] The diseases of the hard tissues of the teeth involved in endodontics are called dental diseases. In a broad sense, dental diseases also include pulp diseases. Caries is a common dental disease, which is characterized by progressive damage to the hard tissues of the teeth. This damage is caused by the combined action of multiple factors in the oral cavity, manifested as demineralization of inorganic substances and decomposition of organic substances in the teeth. As the disease progresses, the teeth will change color and eventually form substantial lesions.

[0003] When treating dental diseases, resin is often needed for filling. At present, resin filling is usually completed through a dosing stick. The operation of the dosing stick is mainly to inject the resin into the tooth by pressing, and the pressing direction is usually on the same axis as the dosing stick body. During the pressing process, due to the direction of force and the holding method, the dosing stick body is easy to slide in the hand.

[0004] For example, the utility model patent with publication number "CN213821789U" in the prior art discloses a drug delivery rod for filling endodontic resin. By pressing the pressure plate downward, the connecting plate acts on the rotating ring to make the fixed wheel descend, and then acts on the screw rod, and then the screw rod rotates and descends through the threaded hole on the fixed plate, and then drives the piston to descend, so as to squeeze the medicine, pass through the funnel, and then pass through the limiting ball and the drug delivery tube to be injected into the tooth.

[0005] In the above-mentioned prior art, when in use, the medical staff needs to hold the medication stick body with one hand and press the pressure plate with the other hand. However, when the thumb presses the pressure plate, the medication stick body is easy to slide relative to the palm. In addition, due to the setting of the limit plate, the thumb needs to avoid the limit plate during the pressing process, which may cause the thumb to be insufficiently in contact with the pressure plate, and then easily slip off. Utility Model Content

[0006] In view of the shortcomings of the prior art, the utility model provides a drug delivery rod for dental resin filling, aiming to solve the problems raised by the above-mentioned background technology.

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a drug delivery rod for dental resin filling, comprising a shell, a first sleeve, a drug storage tank, a delivery tube, a drug delivery device and a pressure handle; the drug delivery device is arranged inside the shell, the first sleeve is connected to the shell and communicated with the inside of the shell; the drug storage tank is connected to the shell, and the pressure handle is hinged to the upper surface of the shell;

[0008] The drug delivery device comprises a cavity, a piston, a pressure rod, a first spring, a drug inlet pipe, a drug outlet pipe, a first one-way valve and a second one-way valve;

[0009] The cavity is arranged inside the shell, and a first limiting part and a second limiting part are arranged in the cavity, the piston is installed between the two limiting parts and is slidably connected to the inner wall of the cavity, the pressure rod is fixedly connected to the upper surface of the piston, and a notch is arranged on the upper surface of the shell for the pressure rod to pass through, and the pressure rod passes through the notch, one end of the first spring is connected to the first limiting part, and the other end of the first spring is connected to the upper end of the pressure rod, one end of the drug inlet pipe extends into the cavity and is located at the lower side of the second limiting part, and the other end of the drug inlet pipe extends into the medicine storage tank, and the first one-way valve is arranged on the drug inlet pipe; one end of the drug outlet pipe extends into the cavity and is located at the lower side of the second limiting part; the other end of the drug outlet pipe is connected to the input end of the second one-way valve, and the output end of the second one-way valve is connected to the delivery pipe; the delivery pipe passes through the first sleeve, and the pressure handle contacts the upper end of the pressure rod.

[0010] Preferably, a plurality of strip-shaped limit plates are connected to the end of the first sleeve away from the shell, the strip-shaped limit plates are arranged in a ring shape, and an accommodating space is formed between the strip-shaped limit plates, and a bending portion is provided at the end of the strip-shaped limit plate away from the first sleeve, and the bending portion bends into the accommodating space; a sphere is movably arranged between the strip-shaped limit plates, a second sleeve is connected to the sphere, the conveying pipe passes through the sphere and the second sleeve, a mounting plate is provided on the first sleeve, a second spring is provided on the mounting plate, the second spring is sleeved on the first sleeve, a clamping ring is sleeved on the first sleeve, and the end of the second spring away from the mounting plate is fixedly connected to the clamping ring.

[0011] Preferably, the medicine storage tank comprises a tank body and a cover body, the tank body is fixedly connected to the shell, and the cover body is threadedly connected to the tank body.

[0012] Preferably, a counterweight block is sleeved on the other end of the medicine inlet tube.

[0013] Preferably, the pressing handle is hinged to the upper surface of the shell through a mounting seat, the mounting seat is U-shaped, and a limiting plate is provided on the mounting seat.

[0014] Preferably, a connecting rod is provided at the upper end of the pressing rod, rollers are provided at both ends of the connecting rod, and the rollers are in contact with the lower surface of the pressing handle.

[0015] Preferably, two slide grooves are provided on the lower surface of the pressing handle, and the two rollers extend into the slide grooves and contact with the bottoms of the slide grooves. Beneficial Effects

[0016] The utility model provides a drug delivery rod for dental resin filling. When the utility model is used, the medical staff holds the shell and the pressure handle, and then matches the output end of the delivery tube with the patient's tooth filling site. The medical staff holds the shell and the pressure handle, and by reciprocatingly pressing the pressure handle, the dental filling resin can be delivered to the delivery tube, and then delivered to the patient's tooth filling site by the delivery tube. During the specific operation, the medical staff holds the shell and the pressure handle with the palm of their hands, and applies a gripping force to the shell and the pressure handle to deliver the dental resin, which effectively avoids the phenomenon of slipping between the palm and the shell or the pressure handle. The design takes into account the ergonomics of the operation, and the medical staff can conveniently hold the shell and the pressure handle at the same time to operate, which not only reduces hand fatigue, but also significantly reduces the risk of slipping during operation.

[0017] When the second sleeve is turned, the ball moves in the accommodation space, and the strip-shaped limit piece is slightly deformed. When the clamp is set on the strip-shaped limit piece, the strip-shaped limit piece is restricted, so that the ball is in a stable state relative to the strip-shaped limit piece. The ball can move at multiple angles relative to the strip-shaped limit piece, thereby realizing flexible adjustment of the second sleeve to suit different patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a three-dimensional structural schematic diagram of a drug delivery rod for dental resin filling.

[0019] Figure 2 The utility model is a schematic diagram of a three-dimensional cross-sectional structure of a drug delivery rod for dental resin filling.

[0020] Figure 3 The utility model is a schematic diagram of the connection structure of the pressure handle and the drug delivery device of the drug delivery rod for dental resin filling.

[0021] Figure 4 The utility model is a schematic diagram of the three-dimensional structure of the pressure rod of the drug delivery rod for dental resin filling.

[0022] Figure 5 The utility model is a schematic diagram of the connection structure of the first sleeve and the delivery tube of the drug delivery rod for dental resin filling.

[0023] Figure 6 The utility model is a schematic diagram of the three-dimensional structure of the pressing handle of the drug delivery rod for dental resin filling.

[0024] In the figure: 1-shell, 2-first sleeve, 21-strip limiting plate, 22-sphere, 23-second sleeve, 24-bend, 25-mounting plate, 26-second spring, 27-clamp ring, 3-drug storage tank, 31-tank body, 32-cover body, 4-delivery pipe, 5-dosing device, 51-cavity, 511-first limiting part, 512-second limiting part, 52-piston, 53-pressure rod, 531-connecting rod, 532-roller, 54-first spring, 55-drug inlet pipe, 56-drug outlet pipe, 57-first one-way valve, 58-second one-way valve, 59-counterweight, 6-pressure handle, 61-mounting seat, 62-limiting plate, 63-slide. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-6 The utility model provides a drug delivery rod for dental resin filling, comprising a shell 1, a first sleeve 2, a medicine storage tank 3, a delivery tube 4, a drug delivery device 5 and a pressure handle 6; the drug delivery device 5 is arranged inside the shell 1, the first sleeve 2 is connected to the shell 1, and communicates with the inside of the shell 1; the medicine storage tank 3 is connected to the shell 1, and the pressure handle 6 is hinged to the upper surface of the shell 1. The medicine storage tank 3 stores dental filling resin inside, and the drug delivery device 5 is used to deliver the dental filling resin to the delivery tube 4, and the dental filling resin enters the filling part of the patient's tooth through the delivery tube 4.

[0027] The drug delivery device 5 includes a cavity 51 , a piston 52 , a pressure rod 53 , a first spring 54 , a drug inlet pipe 55 , a drug outlet pipe 56 , a first one-way valve 57 and a second one-way valve 58 .

[0028] The cavity 51 is arranged inside the shell 1, and a first limiting portion 511 and a second limiting portion 512 are arranged in the cavity 51. The piston 52 is installed between the two limiting portions 511 and is slidably connected to the inner wall of the cavity 51. The pressure rod 53 is fixedly connected to the upper surface of the piston 52. A notch 11 is arranged on the upper surface of the shell 1 for the pressure rod 53 to pass through. The pressure rod 53 passes through the notch 11. One end of the first spring 54 is connected to the first limiting portion 511, and the other end of the first spring 54 is connected to the upper end of the pressure rod 53. One end of the drug inlet pipe 55 extends into the cavity 51 and is located at the lower side of the second limiting portion 512, and the other end of the drug inlet pipe 55 extends into the medicine storage tank 3, and the first one-way valve 57 is arranged on the drug inlet pipe 55; one end of the drug outlet pipe 56 extends into the cavity 51 and is located at the lower side of the second limiting portion 512; the other end of the drug outlet pipe 56 is connected to the input end of the second one-way valve 58, and the output end of the second one-way valve 58 is connected to the delivery pipe 4; the delivery pipe 4 passes through the first sleeve 2, and the pressure handle 6 contacts the upper end of the pressure rod 53.

[0029] When the pressure handle 6 is pressed downward, the pressure handle 6 drives the pressure rod 53 downward, and the pressure rod 53 drives the piston 52 downward, the first spring 54 is compressed, and when the piston 52 moves downward, the dental filling resin in the cavity 51 is squeezed to the medicine outlet pipe 56, and enters the delivery pipe through the second one-way valve 58, and is then delivered out by the delivery pipe 4. When the pressure on the pressure handle 6 is removed, the restoring force of the first spring 54 drives the pressure rod 53 upward, and at the same time, the pressure rod 53 pushes the pressure handle 6 away from the housing 1. The upward movement of the pressure rod 53 drives the piston 52 upward. At this time, negative pressure is formed inside the cavity 51, and the dental filling resin in the medicine storage tank 3 is adsorbed into the cavity 51 through the first one-way valve 57, waiting for the piston 52 to be squeezed again. In this way, the dental filling resin can be delivered out of the delivery pipe 4.

[0030] During actual use, the medical staff holds the shell 1 and the pressure handle 6, and then matches the output end of the delivery tube 4 with the patient's tooth filling site. The medical staff holds the shell 1 and the pressure handle 6, and by reciprocatingly pressing the pressure handle 6, the dental filling resin can be delivered to the delivery tube 4, and then delivered to the patient's tooth filling site by the delivery tube 4. During the specific operation, the medical staff holds the shell 1 and the pressure handle 6 with the palm of their hands, and applies gripping force to the shell 1 and the pressure handle 6 to deliver the dental resin, which effectively avoids the phenomenon of slipping between the palm and the shell 1 or the pressure handle 6. The design takes into account the ergonomics of the operation, and the medical staff can conveniently hold the shell 1 and the pressure handle 6 at the same time to operate, which not only reduces hand fatigue, but also significantly reduces the risk of slipping during operation.

[0031] Specifically, a plurality of strip-shaped limiting pieces 21 are connected to one end of the first sleeve 2 away from the shell 1, and the strip-shaped limiting pieces 21 are arranged in a ring shape, and an accommodating space is formed between the strip-shaped limiting pieces 21. A bending portion 24 is provided at one end of the strip-shaped limiting piece 21 away from the first sleeve 2, and the bending portion 24 bends into the accommodating space; a sphere 22 is movably arranged between the strip-shaped limiting pieces 21, and a second sleeve 23 is connected to the sphere 22, and the conveying pipe 4 passes through the sphere 22 and the second sleeve 23. A mounting piece 25 is provided on the first sleeve 2, and a second spring 26 is provided on the mounting piece 25. The second spring 26 is sleeved on the first sleeve 2, and a clamping ring 27 is sleeved on the first sleeve 2. The end of the second spring 26 away from the mounting piece 25 is fixedly connected to the clamping ring 27.

[0032] Since different patients may have different dental caries, it is necessary to fill different positions with dental resin. In order to facilitate the use of medical staff, before using the device, first hold the clamp ring 27 and move the clamp ring 27 toward the mounting plate 25, the second spring 26 is compressed, then pinch the clamp ring 27 and the first sleeve 2, so that the clamp ring 27 and the first sleeve 2 are in a relatively static state, then move the second sleeve 23, and adjust the angle of the second sleeve 23. Since the delivery tube 4 passes through the ball 22 and the second sleeve 23, the angle adjustment of the second sleeve 23 directly drives the delivery tube 4 to bend, so as to achieve the angle adjustment of the end of the delivery tube 4 outputting the dental filling resin. After adjusting to a suitable angle, release the clamping ring 27. Under the restoring force of the second spring 26, the clamping ring 27 is re-mounted on the strip limiting piece 21. Due to the mounting of the clamping ring 27, the inner side of the strip limiting piece 21 is brought into close contact with the sphere 22. The friction between the sphere 22 and the inner wall of the strip limiting piece 21 is utilized to stabilize the second sleeve 23. Then the patient can be filled with dental resin.

[0033] Furthermore, when the second sleeve 23 is turned, the ball 22 moves in the accommodation space, and the strip-shaped limiting piece 21 is slightly deformed. When the collar 27 is sleeved on the strip-shaped limiting piece 21, the strip-shaped limiting piece 21 is restricted, so that the ball 22 is in a stable state relative to the strip-shaped limiting piece 21. The ball 22 can move at multiple angles relative to the strip-shaped limiting piece 21, thereby realizing flexible adjustment of the second sleeve 23 to suit different patients.

[0034] Specifically, the medicine storage tank 3 includes a tank body 31 and a cover body 32. The tank body 31 is fixedly connected to the housing 1, and the cover body 32 is threadedly connected to the tank body 31. By removing the cover body 32, the dental filling resin can be added into the medicine storage tank 3.

[0035] Specifically, a counterweight 59 is sleeved on the other end of the medicine feeding tube 55. Since the main body 1 may be in different states during actual use, and the dental filling resin has a certain fluidity, which may cause the dental filling resin to be unable to be adsorbed by the medicine feeding tube 55, a counterweight 59 is set, and the counterweight 59 is made of a material with a density greater than that of the dental filling resin. During use, the counterweight 59 falls under the action of gravity, causing the input port of the medicine feeding tube 55 to be immersed in the dental filling resin, ensuring that the medicine feeding tube 55 can adsorb the dental filling resin.

[0036] Specifically, the pressing handle 6 is hinged to the upper surface of the housing 1 through a mounting seat 61, the mounting seat 61 is U-shaped, and a limiting plate 62 is provided on the mounting seat 61. The setting of the limiting plate 62 limits the range of motion of the pressing handle 6 to prevent the pressing handle 6 from turning over to one side of the first sleeve 2, and the setting of the limiting plate 62 is used to ensure that the lower surface of the pressing handle 6 is always in contact with the upper end of the pressing rod 53.

[0037] Specifically, a connecting rod 531 is disposed at the upper end of the pressing rod 53, and rollers 532 are disposed at both ends of the connecting rod 531, respectively, and the rollers 532 are in contact with the lower surface of the pressing handle 6. When the pressing handle 6 is pressed downward, the rollers 532 roll relative to the pressing plate 6, thereby avoiding direct friction between the pressing rod 53 and the lower surface of the pressing handle 6, and reducing the wear of the pressing handle 6 and the pressing rod 52.

[0038] Specifically, two slide grooves 63 are provided on the lower surface of the pressing handle 6, and the two rollers 532 extend into the slide grooves 63 and contact the bottom of the slide grooves 63. The setting of the two slide grooves 63 ensures that the rollers 532 are always fixed in the slide grooves 63, thereby improving the stability of the transmission between the pressing handle 6 and the pressing rod 53.

[0039] Although the above embodiment mainly describes the delivery of resin for tooth filling, the design of the utility model is not limited to this. The medicine storage tank 3 can be used to hold various medicines. By adjusting the internal design and material of the medicine storage tank, it can accommodate medicines of different properties, such as liquid, gel or other substances with different viscosities. In this way, medical staff can also apply the utility model to the delivery of medicines, and flexibly select and deliver appropriate medicines according to treatment needs.

[0040] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

Claims

1. A drug delivery rod for dental resin filling, characterized in that: The invention comprises a housing (1), a first sleeve (2), a medicine storage tank (3), a delivery tube (4), a drug delivery device (5) and a pressure handle (6); the drug delivery device (5) is arranged inside the housing (1); the first sleeve (2) is connected to the housing (1) and communicates with the interior of the housing (1); the medicine storage tank (3) is connected to the housing (1); and the pressure handle (6) is hinged to the upper surface of the housing (1); The drug delivery device (5) comprises a cavity (51), a piston (52), a pressure rod (53), a first spring (54), a drug inlet pipe (55), a drug outlet pipe (56), a first one-way valve (57) and a second one-way valve (58); The cavity (51) is arranged inside the shell (1), and a first limiting portion (511) and a second limiting portion (512) are arranged inside the cavity (51). The piston (52) is installed between the two limiting portions (511) and is slidably connected to the inner wall of the cavity (51). The pressure rod (53) is fixedly connected to the upper surface of the piston (52). The upper surface of the shell (1) is provided with a notch (11) for the pressure rod (53) to pass through. The pressure rod (53) passes through the notch (11). One end of the first spring (54) is connected to the first limiting portion (511), and the other end of the first spring (54) is connected to the upper end of the pressure rod (53). One end of the drug inlet pipe (55) extends into the cavity (51) and is located at the lower side of the second limiting portion (512), and the other end of the drug inlet pipe (55) extends into the drug storage tank (3), and the first one-way valve (57) is arranged on the drug inlet pipe (55); one end of the drug outlet pipe (56) extends into the cavity (51) and is located at the lower side of the second limiting portion (512); the other end of the drug outlet pipe (56) is connected to the input end of the second one-way valve (58), and the output end of the second one-way valve (58) is connected to the delivery pipe (4); the delivery pipe (4) passes through the first sleeve (2), and the pressure handle (6) contacts the upper end of the pressure rod (53).

2. A drug delivery rod for dental resin filling according to claim 1, characterized in that: A plurality of strip-shaped limiting pieces (21) are connected to one end of the first sleeve (2) away from the housing (1), the strip-shaped limiting pieces (21) are arranged in a ring shape, and a receiving space is formed between the strip-shaped limiting pieces (21); a bending portion (24) is provided at one end of the strip-shaped limiting piece (21) away from the first sleeve (2), and the bending portion (24) bends into the receiving space; a sphere (22) is movably provided between the strip-shaped limiting pieces (21), and the sphere (22) is connected to the first sleeve (2) and the first sleeve (2) is provided with a plurality of strip-shaped limiting pieces (21), the strip-shaped limiting pieces (21) are arranged in a ring shape, and a receiving space is formed between the strip-shaped limiting pieces (21) and the first sleeve (2) is provided with a bending portion (24) and the bending portion (24) is bent into the receiving space; a sphere (22) is movably provided between the strip-shaped limiting pieces (21), and the sphere (22) is connected to the first sleeve (2 ... A second sleeve (23) is connected, the delivery pipe (4) passes through the sphere (22) and the second sleeve (23), a mounting plate (25) is provided on the first sleeve (2), a second spring (26) is provided on the mounting plate (25), the second spring (26) is sleeved on the first sleeve (2), a clamping ring (27) is sleeved on the first sleeve (2), and one end of the second spring (26) away from the mounting plate (25) is fixedly connected to the clamping ring (27).

3. A drug delivery rod for dental resin filling according to claim 1, characterized in that: The medicine storage tank (3) comprises a tank body (31) and a cover body (32); the tank body (31) is fixedly connected to the housing (1), and the cover body (32) is threadedly connected to the tank body (31).

4. A drug delivery rod for dental resin filling according to claim 1, characterized in that: The other end of the medicine inlet pipe (55) is sleeved with a counterweight (59).

5. A drug delivery rod for dental resin filling according to claim 1, characterized in that: The pressing handle (6) is hingedly connected to the upper surface of the housing (1) via a mounting seat (61); the mounting seat (61) is U-shaped, and a limiting plate (62) is provided on the mounting seat (61).

6. A drug delivery rod for dental resin filling according to any one of claims 1 to 5, characterized in that: A connecting rod (531) is provided at the upper end of the pressing rod (53), and rollers (532) are provided at both ends of the connecting rod (531), respectively, and the rollers (532) are in contact with the lower surface of the pressing handle (6).

7. A drug delivery rod for dental resin filling according to claim 6, characterized in that: The lower surface of the pressing handle (6) is provided with two sliding grooves (63), and the two rollers (532) extend into the sliding grooves (63) and contact the bottom of the sliding grooves (63).

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