Disposable metered syringe for oral pericoronal irrigation treatment

Abstract

The utility model discloses a disposable quantitative syringe for oral pericoronal irrigation treatment, comprising a syringe, a push rod, a rubber plug and a needle, wherein the rubber plug is arranged in the syringe and driven to move back and forth by the push rod, and the needle is arranged on a needle mounting seat at the end of the syringe; scale lines are arranged along the length direction of the inner cavity of the syringe, and a protective sleeve is arranged on the outer peripheral wall of the syringe, wherein the protective sleeve is made of a transparent material, and the protective sleeve is fitted with the outer peripheral wall of the syringe in the first state, and the protective sleeve extends downward to cover the needle in the second state, so that the needle is arranged in the protective sleeve. By arranging the protective sleeve, after the needle is installed and the medicine is extracted, the protective sleeve can prevent the needle from contacting with other things in the external environment, thereby protecting the safety of personnel and preventing the needle from being infected by pathogens in the external environment.

Description

Technical Field

[0001] The utility model relates to the technical field of oral medical instruments, in particular to a disposable quantitative syringe for oral pericoronal irrigation treatment. Background Art

[0002] A syringe is a common medical device that uses a needle to extract or inject gases or liquids. The syringe barrel can be made of plastic or glass, and usually has a scale indicating the volume of liquid in the syringe. Syringes can also be used in medical devices, containers, and scientific instruments such as some chromatography to inject through a rubber septum.

[0003] In oral treatment, syringes are widely used. In addition to oral local anesthesia, they are also used in operations such as pericoronal irrigation. For a long time, the structure of the syringe has not changed. It generally includes a syringe, a push rod and a needle. Disposable plastic syringes or glass and metal syringes can be used, but the operation of replacing the needle increases the risk of cross-infection, inaccurate dosage and occupational exposure of the operator. In order to achieve a good treatment effect, first, it is necessary to limit the dosage of the drug conveniently, accurately and safely. The current syringes are generally completed by the subjective operation of medical staff, which completely depends on the experience of medical staff, and improper operation may cause pain and other symptoms to patients; second, disposable plastic syringes are widely used, which greatly reduces the risk of infection caused by cross-use of syringes; third, the flushing needle should be round and blunt and reduce trauma to the surgical area tissue. In addition, a large number of dental instruments are used in the process of oral treatment, and doctors need to place a large number of instruments during treatment, which makes it very easy for the needle to contact other instruments. Since the needle is directly inserted into the patient's mouth, it brings a greater risk of infection; therefore, the existing syringes need to be further optimized. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a disposable quantitative syringe for oral pericoronal irrigation treatment, so as to solve the technical defects of at least one existing oral medical syringe.

[0005] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0006] A disposable quantitative syringe for oral pericoronal irrigation treatment comprises a syringe, a push rod, a rubber plug and a needle, wherein the rubber plug is arranged in the syringe and driven to reciprocate by the push rod, and the needle is arranged on a needle mounting seat at the end of the syringe; scale lines are arranged along the length direction of the inner cavity of the syringe, and a protective sleeve is arranged on the outer peripheral wall of the syringe, wherein the protective sleeve is made of a transparent material, and the protective sleeve is in contact with the outer peripheral wall of the syringe in a first state, and extends downward to cover the needle in a second state, so that the needle is arranged in the protective sleeve.

[0007] Furthermore, in the disposable quantitative syringe, the needle is replaced by a curved pipe head, and the curved pipe head includes a folding portion and a shower needle port at the end.

[0008] Specifically, the syringe is provided with a first retaining ring and a second retaining ring, and correspondingly, a first ring groove and a second ring groove are provided on the inner wall of the protective sleeve; when the first retaining ring cooperates with the first ring groove and the second retaining ring cooperates with the second ring groove, the protective sleeve fits with the outer peripheral wall of the syringe; when the second retaining ring cooperates with the first ring groove, the protective sleeve covers the needle head so that the needle head is arranged in the protective sleeve.

[0009] Furthermore, a retraction bracelet is provided at the upper end of the syringe, and the retraction bracelet takes the central axis of the syringe as the symmetry center; the lower end of the push rod is fixedly connected to the rubber plug, and a push plate is provided at the upper end of the push rod.

[0010] Furthermore, the syringe is made of a transparent plastic material, an observation slot is provided along the length direction of the syringe, the observation slot is made of a transparent material, and the scale line is arranged along the observation slot.

[0011] Furthermore, a screw hole is formed in the center of the push rod along the length direction, and an adjusting screw is arranged in the screw hole. The lower end of the adjusting screw is fixedly connected to the rubber plug. The adjusting screw rotates in the screw hole to drive the rubber plug to rotate and move in the accommodating cavity of the syringe, thereby adjusting the capacity of the accommodating cavity.

[0012] Optionally, an adjusting bracelet is provided at the upper end of the adjusting screw, and the adjusting bracelet is fixed to the upper end of the adjusting screw via a bracelet mounting base.

[0013] Furthermore, a guide end cover is provided at the upper end of the syringe, a guide hole is provided at the center of the guide end cover, the push rod is passed through the guide hole and then provided in a receiving cavity in the syringe, and a transition fit is formed between the guide hole and the outer wall of the push rod.

[0014] Furthermore, an outer circle threaded portion is also provided on the outer circumferential wall of the upper end of the syringe, and the outer circle threaded portion is located on the upper part of the retraction bracelet. An end cover internal threaded portion is provided on the inner circumferential wall of the guide end cover corresponding to the outer circle threaded portion, and the outer circle threaded portion and the end cover internal threaded portion cooperate with each other.

[0015] Furthermore, a locking hole is radially arranged on the guide end cover corresponding to the guide hole, and a locking screw is arranged in the locking hole, and the locking screw is used to limit the movement of the push rod.

[0016] By adopting the above technical solution, the disposable quantitative syringe for oral pericoronal irrigation treatment of the embodiment of the utility model is provided with a protective sleeve. After the needle is installed and the medicine is extracted, the protective sleeve can prevent the needle from contacting with other things in the external environment, protect the safety of personnel and prevent the needle from being infected by bacteria in the external environment; in addition, by providing a scale line in conjunction with the adjustment screw, the capacity in the syringe can be quantitatively adjusted. Furthermore, by coarse adjustment and fine adjustment of the adjustment screw, the locking screw can be used to adjust the quantity to the greatest extent. Finally, by providing a locking screw, after quantitative adjustment, the movement of the push rod is limited by the locking screw to avoid changes in the capacity of the syringe due to collision or misoperation, thereby further improving the safety of the syringe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 This is a front view of the first disposable quantitative syringe for oral pericoronal irrigation treatment according to an embodiment of the utility model;

[0019] Figure 2 This is a front view of the second disposable quantitative syringe for oral pericoronal irrigation treatment according to an embodiment of the utility model;

[0020] Figure 3 The disposable quantitative syringe for oral pericoronal irrigation treatment according to the embodiment of the utility model is used in a state structure Figure 2 ;

[0021] Figure 4 This is a top view of the structure of a disposable quantitative syringe for oral pericoronal irrigation treatment according to an embodiment of the utility model;

[0022] Figure 5This is a structural diagram of a pipe elbow according to an embodiment of the utility model;

[0023] Figure 6 for Figure 4 The structural section is shown along the AA section line;

[0024] Figure 7 for Figure 4 The structural diagram of the use state is cut along the AA section line;

[0025] Among them, 10-syringe, 11-outer circle threaded part, 12-retraction bracelet, 13-observation groove, 14-first clamping ring, 15-second clamping ring, 16-scale line, 17-needle mounting seat, 18-needle tube; 20-guide end cover, 21-guide hole, 22-end cover inner threaded part, 23-locking hole, 24-anti-slip groove; 30-push rod, 31-screw hole, 32-push plate; 40-adjusting screw, 41-adjusting bracelet, 42-bracelet mounting seat, 50-rubber plug, 60-protective cover, 61-first ring groove, 62-second ring groove, 70A-needle, 70B-elbow head, 701 B-folding part, 702B-shower needle port, 80-locking screw. DETAILED DESCRIPTION

[0026] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0027] Example 1

[0028] like Figure 1-7 As shown, an embodiment of the utility model provides a disposable quantitative syringe for oral pericoronal irrigation treatment, comprising a syringe 10, a push rod 30, a rubber plug 50 and a needle 70A, wherein the rubber plug 50 is arranged in the syringe 10 and driven to reciprocate by the push rod 30, and the needle 70A is arranged at a needle mounting seat 17 at the end of the syringe 10; scale lines 16 are arranged along the length direction of the inner cavity of the syringe 10, and a protective sleeve 60 is provided on the outer peripheral wall of the syringe 10, and the protective sleeve 60 is made of a transparent material. In the first state, the protective sleeve 60 is in contact with the outer peripheral wall of the syringe 10, and in the second state, the protective sleeve 60 extends downward to cover the needle 70A, so that the needle 70A is arranged in the protective sleeve 60.

[0029] like Figure 2 , 6As shown, in the disposable quantitative syringe, the needle 70A is replaced with a bend pipe head 70B, and the bend pipe head 70B includes a folding portion 701B and a shower needle port 702B at the end. Figure 1 , 3 As shown, the protective cover 60 is initially in contact with the outer wall of the syringe 10 and will not change the appearance structure of the syringe 10. In addition, the protective cover 60 is made of transparent material and will not affect the observation of the scale line 16. After the needle 70A is installed, in order to prevent the needle 70A from being contaminated, the existing method generally uses a needle cover, but the needle cover is disposable and is mounted on the needle, and the strength is not high. It is easy to be broken and damaged during a collision. The protective cover 60 is made of a transparent elastic material, such as plastic, which covers the needle 70A and does not contact the needle 70A, which is safer and has high strength.

[0030] Optionally, the protective sleeve 60 is elastic and is arranged on the outer wall of the syringe 10 by means of a thread, a snap or an interference fit.

[0031] like Figure 1 As shown, the syringe 10 is provided with a first retaining ring 14 and a second retaining ring 15, and the inner wall of the protective sleeve 60 is provided with a first annular groove 61 and a second annular groove 62 correspondingly; when the first retaining ring 14 cooperates with the first annular groove 61 and the second retaining ring 15 cooperates with the second annular groove 62, the protective sleeve 60 fits with the outer peripheral wall of the syringe 10; when the second retaining ring 15 cooperates with the first annular groove 61, the protective sleeve 60 covers the needle head 70A, so that the needle head 70A is arranged in the protective sleeve 60.

[0032] like Figure 1 As shown, a retraction bracelet 12 is provided at the upper end of the syringe 10, and the retraction bracelet 12 takes the central axis of the syringe 10 as the symmetry center; the lower end of the push rod 30 is fixedly connected to the rubber plug 50, and a push plate 32 is provided at the upper end of the push rod 30. When in use, the medical staff holds the syringe by the retraction bracelet 12 and presses the push plate 32 with the thumb to complete the injection operation.

[0033] Optionally, the disposable quantitative syringe can be made of glass, plastic material, or transparent plastic material.

[0034] Specifically, the syringe 10 is made of a transparent plastic material, an observation slot 13 is provided along the length direction of the syringe 10 , the observation slot 13 is made of a transparent material, and the scale line 16 is arranged along the observation slot 13 .

[0035] like Figure 4 , 5As shown in FIG. 6 , a screw hole 31 is formed at the center of the push rod 30 along the length direction, and an adjusting screw 40 is arranged in the screw hole 31. The lower end of the adjusting screw 40 is fixedly connected to the rubber plug 50. The adjusting screw 40 rotates in the screw hole 31 to drive the rubber plug 50 to rotate and move in the accommodating cavity of the syringe 10, thereby adjusting the capacity of the accommodating cavity.

[0036] The screw structure is adopted. As long as the pitch is determined, the screw moves one pitch when it rotates one circle. The adjustment accuracy can be set by increasing or decreasing the pitch. The operation of adjusting the screw is simpler and the accuracy is controllable than the existing push-pull rubber plug that relies on manual observation.

[0037] Optionally, a needle tube 18 is disposed in the needle mounting seat 17, and the needle tube 18 is connected to the accommodating cavity. The needle 70A is made of elastic plastic material through the upper end, and the needle mounting seat 17 is inserted into the upper end and elastically clamped, so that the needle tube 18 is connected to the needle 70A.

[0038] Optionally, an adjusting bracelet 41 is provided at the upper end of the adjusting screw 40, and the adjusting bracelet 41 is fixed to the upper end of the adjusting screw 40 through a bracelet mounting seat 42. When in use, the adjusting bracelet 41 is rotated to drive the adjusting screw 40 to rotate in the screw hole 31.

[0039] like Figure 5 , 6 As shown, a guide end cover 20 is also provided at the upper end of the syringe 10, and a guide hole 21 is provided at the center of the guide end cover 20. The push rod 30 is arranged in a receiving cavity in the syringe 10 after passing through the guide hole 21, and a transition fit is formed between the guide hole 21 and the outer wall of the push rod 30.

[0040] Specifically, the outer peripheral wall of the upper end of the syringe 10 is also provided with an outer threaded portion 11, and the outer threaded portion 11 is located on the upper part of the retraction bracelet 12. The inner peripheral wall of the guide end cap 20 is provided with an end cap internal threaded portion 22 corresponding to the outer threaded portion 11, and the outer threaded portion 11 and the end cap internal threaded portion 22 cooperate with each other. Since the adjustment accuracy of the adjustment screw 40 is limited by the pitch, in order to further improve the adjustment accuracy, due to the transitional cooperation between the push rod 30 and the guide hole 21, the relative positions of the push rod 30, the adjustment screw 40 and the rubber plug 50 in the accommodating cavity are fine-tuned by providing the outer threaded portion 11 and the end cap internal threaded portion 22, thereby realizing two-stage quantitative adjustment.

[0041] Optionally, the outer peripheral wall of the guide end cover 20 is provided with an anti-slip groove 24 for rotating and adjusting the guide end cover 20 .

[0042] like Figure 5 , 6As shown, the guide end cover 20 is provided with a locking hole 23 along the radial direction corresponding to the guide hole 21, and a locking screw 80 is provided in the locking hole 23, and the locking screw 80 is used to limit the movement of the push rod 30. When in use, the locking screw 80 is rotated, so that the locking screw 80 can press the push rod 30 in the radial direction or separate from the push rod 30, so that the push rod 30 cannot be easily moved to avoid accidental touch.

[0043] The disposable quantitative syringe for oral pericoronal irrigation treatment of the embodiment of the utility model is provided with a protective sleeve. After the needle is installed and the medicine is extracted, the protective sleeve can prevent the needle from contacting with other things in the external environment, protect the safety of personnel and prevent the needle from being infected by pathogens in the external environment; in addition, by providing a scale line in conjunction with the adjustment screw, the capacity in the syringe can be quantitatively adjusted. Further, by coarse adjustment and fine adjustment of the adjustment screw, the locking screw can be used to adjust the quantity to the greatest extent. Finally, by providing a locking screw, after quantitative adjustment, the movement of the push rod is limited by the locking screw to avoid changes in the capacity of the syringe due to collision or misoperation, thereby further improving the safety of the syringe.

[0044] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A disposable quantitative syringe for oral pericoronal irrigation treatment, characterized in that: It comprises a syringe, a push rod, a rubber plug and a needle, wherein the rubber plug is arranged in the syringe and driven to move back and forth by the push rod, and the needle is arranged on a needle mounting seat at the end of the syringe; Graduation lines are arranged along the length direction of the inner cavity of the syringe, and a protective cover is arranged on the outer peripheral wall of the syringe. The protective cover is made of a transparent material. The protective cover is in contact with the outer peripheral wall of the syringe in a first state, and extends downward to cover the needle in a second state, so that the needle is arranged in the protective cover; The syringe is made of transparent plastic material, an observation slot is provided along the length direction of the syringe, the observation slot is made of transparent material, and the scale line is arranged along the observation slot; A screw hole is formed at the center of the push rod along the length direction, and an adjusting screw is arranged in the screw hole. The lower end of the adjusting screw is fixedly connected to the rubber plug. The adjusting screw rotates in the screw hole to drive the rubber plug to rotate and move in the accommodating cavity of the syringe, thereby adjusting the capacity of the accommodating cavity; The outer peripheral wall of the upper end of the syringe is also provided with an outer circle threaded portion, and the outer circle threaded portion is located at the upper part of the retraction bracelet. Corresponding to the outer circle threaded portion, an end cover internal threaded portion is provided on the inner peripheral wall of the guide end cover, and the outer circle threaded portion cooperates with the end cover internal threaded portion.

2. The disposable quantitative syringe for oral pericoronal irrigation treatment according to claim 1, characterized in that: Furthermore, in the disposable quantitative syringe, the needle is replaced by a curved pipe head, and the curved pipe head includes a folding portion and a shower needle port at the end.

3. The disposable quantitative syringe for oral pericoronal irrigation treatment according to claim 2, characterized in that: The syringe is provided with a first retaining ring and a second retaining ring, and correspondingly, a first ring groove and a second ring groove are provided on the inner wall of the protective sleeve; when the first retaining ring cooperates with the first ring groove and the second retaining ring cooperates with the second ring groove, the protective sleeve fits against the outer peripheral wall of the syringe; when the second retaining ring cooperates with the first ring groove, the protective sleeve covers the needle head so that the needle head is arranged in the protective sleeve.

4. The disposable quantitative syringe for oral pericoronal irrigation treatment according to claim 1, characterized in that: A retraction bracelet is arranged at the upper end of the syringe, and the retraction bracelet takes the central axis of the syringe as the symmetry center; the lower end of the push rod is fixedly connected to the rubber plug, and a push plate is arranged at the upper end of the push rod.

5. The disposable quantitative syringe for oral pericoronal irrigation treatment according to claim 1, characterized in that: The upper end of the syringe is also provided with a guide end cover, a guide hole is provided at the center of the guide end cover, the push rod is passed through the guide hole and is arranged in a receiving cavity in the syringe, and a transition fit is formed between the guide hole and the outer wall of the push rod.

6. The disposable quantitative syringe for oral pericoronal irrigation treatment according to claim 5, characterized in that: A locking hole is radially arranged on the guide end cover corresponding to the guide hole, and a locking screw is arranged in the locking hole. The locking screw is used to limit the movement of the push rod.

7. The disposable quantitative syringe for oral pericoronal irrigation treatment according to claim 1, characterized in that: An adjusting bracelet is arranged on the upper end of the adjusting screw, and the adjusting bracelet is fixed to the upper end of the adjusting screw via a bracelet mounting seat.

Images