CN219661960U - Universal threaded injection needle for dentistry and dental syringe - Google Patents

Abstract

The utility model relates to the technical field of medical appliances, in particular to a dental universal threaded injection needle and a dental syringe, wherein the dental universal threaded injection needle is used for being installed on the dental syringe and comprises a needle seat for fixing a needle tube, an installation groove for being in threaded connection with the dental syringe is formed in the needle seat, an opening is formed in one side of the installation groove, a plurality of threaded structures with different structures are sequentially arranged on the inner wall of the installation groove along the direction from the opening to the bottom of the installation groove, the opening is in the direction from the opening to the bottom of the installation groove, and the inner diameters of the plurality of threaded structures are sequentially reduced; the thread structure that a plurality of structures are different sets up and makes the general screw syringe needle of dentistry can cooperate the use with the multiple dentistry syringe phase-match that has different screw structures, and the commonality is strong, is favorable to avoiding medical personnel to take the misuse and leads to the risk that the syringe needle drops, has protected patient's personal safety.

Description

Universal threaded injection needle for dentistry and dental syringe

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a dental universal threaded injection needle and a dental syringe.

Background

Teeth are important components of the body. Dental diseases also afflict many patients, and thus tooth extraction and tooth restoration constitute a common minor operation in dentistry. When the tooth is extracted, the local anesthesia of the tooth root is needed to be performed by injecting the gunpowder, so that the dental syringe has high use frequency.

Currently, the double-ended dental injection needles used in the market are classified into english threads and metric threads, and when in use, different types of dental injection needles are required to be selected according to the thread type of the dental injector. In clinical operation, medical personnel easily misuse for injection needle and syringe mismatch, and then cause the syringe needle to drop easily when using, naked syringe needle gets into in oral cavity and the throat, will cause serious injury to the patient.

Disclosure of Invention

The utility model aims to solve the problem that medical staff are easy to take and misuse due to different thread types of the existing dental injection needle.

In order to solve the problems, the utility model provides the following technical scheme:

the utility model provides a general screw thread formula syringe needle of dentistry for install on the dentistry syringe, general screw thread formula syringe needle of dentistry is including the needle file that is used for fixed needle tubing, the inside of needle file be equipped with be used for with dentistry syringe threaded connection's mounting groove, one side of mounting groove is formed with the opening, the mounting groove inner wall is followed the opening to the direction of mounting groove bottom has set gradually a plurality of different structure's helicitic texture, and follows the opening to the direction of mounting groove bottom, a plurality of the inside diameter of helicitic texture reduces in proper order.

Compared with the prior art, the dental universal threaded injection needle provided by the utility model has the following beneficial effects:

in the embodiment, when the dental syringe is installed, the dental syringe is positioned below the dental syringe needle, the dental syringe moves from bottom to top, so that a screw rod at the upper end of the dental syringe enters the installation groove from the opening, and as the inner wall of the installation groove is sequentially provided with a plurality of thread structures with different structures from bottom to top and the inner diameters of the thread structures are sequentially reduced from bottom to top, the structure enables the screw rod at the upper end of the dental syringe to accurately move to the thread structure matched with the dental syringe needle when the screw rod enters the installation groove from the opening to move from bottom to top, and the dental syringe needle or the dental syringe is rotated, so that the dental syringe is in threaded connection with the dental syringe needle; wherein, a plurality of different screw thread structure settings make the general screw thread syringe needle of dentistry can cooperate the use with the multiple dental syringe phase-match that has different screw structures, and the commonality is strong, is favorable to simplifying the assembly of dentistry syringe needle and dental syringe on the one hand, improves work efficiency, is favorable to avoiding medical personnel to take the misuse and lead to the risk that the syringe needle drops on the other hand, has protected patient's personal safety.

Preferably, the thread structure comprises an english thread structure and a metric thread structure, the metric thread structure is disposed near the opening, and the english thread structure is disposed on a side of the metric thread structure far away from the opening.

Preferably, the dental universal threaded injection needle further comprises a needle tube, and the needle tube is inserted into the needle seat and bonded by epoxy resin.

Preferably, the needle seat comprises a fixing part and a mounting part which are integrally formed, a fixing hole is formed in the middle of the fixing part in a penetrating manner along the axial direction of the needle seat, and the needle tube is inserted into the fixing hole; the external diameter of installation department is greater than the diameter of fixed part, the mounting groove set up in the inside of installation department, the opening set up in the installation department is kept away from the one end of fixed part.

Preferably, a conical notch is arranged in the middle of one end of the fixing part, which is far away from the mounting part, the conical notch is coaxially arranged with the fixing hole, the tip of the conical notch is communicated with the fixing hole, and the needle tube is inserted into the fixing hole from the conical notch.

Preferably, the dental universal threaded injection needle further comprises a head sheath and a tail sheath, wherein the head sheath is used for being sleeved outside the mounting part of the needle seat from one end close to the fixing part, and the tail sheath is used for being sleeved at the lower end of the head sheath from one end close to the mounting part.

Preferably, the head sheath comprises a head pipe sleeve, a head butt joint pipe, a clamping connection pipe and a convex ring which are integrally formed, wherein the clamping connection pipe is connected to the lower end of the head butt joint pipe and is arranged along the axial direction of the head sheath, the convex ring is arranged on the inner wall of the clamping connection pipe, the inner diameter of the convex ring is smaller than the outer diameter of the mounting part by 1-3mm, and the surface of the convex ring is in an arc-shaped structure; when the head sheath is sleeved outside the mounting part of the needle seat from one end close to the fixing part, the clamping pipe is clamped outside the mounting part through the convex ring, and the upper end part of the needle tube is positioned in the head sheath.

Preferably, the tail sheath comprises a tail pipe sleeve, a tail butt joint pipe and raised strips arranged on the inner wall of the tail butt joint pipe, wherein the raised strips are uniformly arranged at intervals along the circumferential direction of the tail butt joint pipe, the inner diameter of a circle where the raised strips are positioned is smaller than the outer diameter of the joint pipe by 1-3mm, and the surfaces of the raised strips are in an arc-shaped structure; when the tail sheath is sleeved at the lower end of the head sheath from one end close to the mounting part, the tail butt joint pipe is clamped outside the joint pipe through the convex strips, and the lower end part of the needle tube is positioned in the tail pipe sleeve.

Preferably, the needle seat further comprises a clamping ring arranged on the outer wall of the lower end of the mounting part, and when the head sheath is sleeved outside the mounting part of the needle seat from one end close to the fixing part, the clamping ring is positioned outside the head sheath;

the inner wall of the tail butt joint pipe is provided with a ring groove, and when the tail sheath is sleeved at the lower end of the head sheath from one end close to the mounting part, the clamping ring is clamped in the ring groove of the tail butt joint pipe.

The utility model also provides a dental syringe comprising the dental universal threaded injection needle.

The dental syringe has the advantages corresponding to the dental universal threaded injection needle compared with the prior art, and is not described herein.

Drawings

FIG. 1 is a schematic view showing the overall structure of a dental universal screw-type injection needle according to an embodiment of the present utility model;

fig. 2 is a schematic view showing the overall sectional structure of a dental universal screw type injection needle according to an embodiment of the present utility model.

Reference numerals illustrate:

1 needle seat, 10 mounting groove, 100 opening, 11 fixing part, 12 mounting part, 13 fixing hole, 14 conical notch, 15 clamping ring, 2 English system screw thread structure, 3 metric system screw thread structure, 4 needle tube, 5 head sheath, 51 head pipe sleeve, 52 head butt joint, 53 clamping pipe, 54 convex ring, 6 tail sheath, 61 tail pipe sleeve, 62 tail butt joint pipe, 63 convex strip, 64 ring groove.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the coordinate system XYZ provided herein, the positive direction of the X axis represents the right direction, the negative direction of the X axis represents the left direction, the positive direction of the Y axis represents the front direction, the negative direction of the Y axis represents the rear direction, the positive direction of the Z axis represents the upper direction, and the negative direction of the Z axis represents the lower direction; the Z-axis, X-axis, Y-axis are meant to be illustrative only and to simplify the description of the present utility model and are not indicative or implying that the apparatus or elements being referred to must have, be constructed and operated in a particular orientation and therefore are not to be construed as limiting the present utility model.

Referring to fig. 1-2, the dental universal threaded injection needle provided by the utility model is used for being installed on a dental syringe, the dental universal threaded injection needle comprises a needle seat 1 for fixing a needle tube 4, an installation groove 10 for being in threaded connection with the dental syringe is arranged in the needle seat 1, an opening 100 is formed on one side of the installation groove 10, a plurality of threaded structures with different structures are sequentially arranged on the inner wall of the installation groove 10 along the direction from the opening to the bottom of the installation groove 10, and the inner diameters of the plurality of threaded structures are sequentially reduced along the direction from the opening to the bottom of the installation groove 10.

The thread structure is of various types, including, for example, metric thread, american thread, english thread, unified thread, and the like, and the "thread structure of which a plurality of structures are different" means at least two different types of thread structures.

In this embodiment, during installation, the dental injector is located below the dental injection needle, and the dental injector moves from bottom to top, so that the screw rod at the upper end of the dental injector enters the installation groove 10 from the opening 100, and as a plurality of thread structures with different structures are sequentially arranged on the inner wall of the installation groove 10 from bottom to top, and the inner diameters of the plurality of thread structures are sequentially reduced from bottom to top, the structure enables the screw rod at the upper end of the dental injector to accurately move to the thread structure matched with the opening 100 when entering the installation groove 10 from bottom to top, and rotates the dental universal thread injection needle or the dental injector, so that the dental injector is in threaded connection with the dental universal thread injection needle; wherein, a plurality of different structures the screw structure sets up and makes the general screw type syringe needle of dentistry can with the multiple of having different screw structures dental syringe assorted to cooperate the use, the commonality is strong, is favorable to simplifying on the one hand dental syringe needle with the assembly of dental syringe improves work efficiency, on the other hand is favorable to avoiding medical personnel to take the misuse and lead to the risk that the syringe needle drops by mistake, has protected patient's personal safety.

Referring to fig. 2, the thread structure preferably includes an english thread structure 2 and a metric thread structure 3, the metric thread structure 3 is disposed near the opening 100, and the english thread structure 2 is disposed on a side of the metric thread structure 3 away from the opening 100.

Specifically, the english thread is disposed above the metric thread, and in the universal standard, the inside diameter of the english thread is smaller than the inside diameter of the metric thread.

In this embodiment, the setting of imperial screw thread with the metric screw thread makes the general screw thread syringe needle of dentistry can match with metric dental syringe and imperial dental syringe to this cooperation is used, and the commonality is strong, is favorable to simplifying on the one hand the dental syringe needle with the assembly of dental syringe improves work efficiency, and on the other hand is favorable to avoiding medical personnel to take the misuse and lead to the risk that the syringe needle drops by mistake, has protected patient's personal safety.

Referring to fig. 1-2, the dental universal screw-type injection needle further preferably comprises a needle tube 4, wherein the needle tube 4 is inserted into the needle seat 1 and is bonded by epoxy resin.

Referring to fig. 2, preferably, the needle holder 1 includes an integrally formed fixing portion 11 and an installation portion 12, a fixing hole 13 is formed in the middle of the fixing portion 11 along the axial direction of the needle holder 1, and the needle tube 4 is inserted into the fixing hole 13; the outer diameter of the mounting portion 12 is larger than the diameter of the fixing portion 11, the mounting groove 10 is provided inside the mounting portion 12, and the opening 100 is provided at an end of the mounting portion 12 away from the fixing portion 11.

In this embodiment, the hub 1 includes a fixing portion 11 and a mounting portion 12, the fixing portion 11 is used for fixing the needle tube 4, the threaded structure in the mounting groove 10 in the mounting portion 12 is used for mounting the hub 1 on the screw of the dental syringe, and the fixing portion 11 and the mounting portion 12 perform their own roles, which is advantageous in enabling the dental syringe to be stably mounted on the dental syringe.

Preferably, a conical notch 14 is arranged in the middle of one end of the fixing portion 11 away from the mounting portion 12, the conical notch 14 is coaxially arranged with the fixing hole 13, the tip of the conical notch 14 is communicated with the fixing hole 13, and the needle tube 4 is inserted into the fixing hole 13 from the conical notch 14.

In this embodiment, the tapered notch 14 is coaxially disposed with the fixing hole 13, and the tip of the tapered notch 14 is communicated with the fixing hole 13, which is beneficial to increasing the convenience of inserting the needle cannula 4 into the fixing hole 13, and further improving the efficiency of assembling the needle cannula 4 and the needle hub 1.

Referring to fig. 1-2, preferably, the dental universal screw-type injection needle further includes a head sheath 5 and a tail sheath 6, the head sheath 5 is used to be sleeved outside the mounting portion 12 of the needle holder 1 from an end near the fixing portion 11, and the tail sheath 6 is used to be sleeved at a lower end of the head sheath 5 from an end near the mounting portion 12.

Specifically, the head sheath 5 is configured to cover the outside of the upper end of the needle tube 4 from the upper end, and the tail sheath 6 is configured to cover the outside of the lower end of the needle tube 4 from the lower end.

In this embodiment, the arrangement of the head sheath 5 and the tail sheath 6 prevents the needle tube 4 from being pricked to medical staff from the upper end and the lower end respectively, and is beneficial to ensuring the cleanness of the needle tube 4 and the needle seat 1, and avoiding the infection of bacteria on the needle tube 4, thereby affecting the injection effect.

Referring to fig. 1, preferably, the head sheath 5 includes an integrally formed head pipe sleeve 51, a head butt pipe 52, a bayonet pipe 53, and a collar 54, the bayonet pipe 53 is connected to the lower end of the head butt pipe 52 and is disposed along the axial direction of the head sheath 5, the collar 54 is disposed on the inner wall of the bayonet pipe 53, the inner diameter of the collar 54 is smaller than the outer diameter of the mounting portion 12 by 1-3mm, and the surface of the collar 54 is in an arc-shaped structure; when the head sheath 5 is sleeved outside the mounting portion 12 of the needle holder 1 from one end close to the fixing portion 11, the clamping tube 53 is clamped outside the mounting portion 12 through the convex ring 54, and the upper end portion of the needle tube 4 is located in the head sleeve 51.

In this embodiment, the fastening tube 53 is fastened to the outside of the mounting portion 12 by the collar 54, which makes the head protecting sleeve 5 fastened to the outside of the needle tube 4 from the upper end, which is beneficial to preventing the needle tube 4 from being pricked to a medical care worker from the upper end, and to ensuring the cleaning of the needle tube 4 and the needle holder 1, so as to prevent the needle tube 4 from being contaminated with bacteria.

Referring to fig. 2, preferably, the tail sheath 6 includes a tail sleeve 61, a tail butt-joint pipe 62, and ribs 63 disposed on an inner wall of the tail butt-joint pipe 62, where a plurality of the ribs 63 are uniformly spaced along a circumferential direction of the tail butt-joint pipe 62, an inner diameter of a circle where the plurality of the ribs 63 are located is smaller than an outer diameter of the joint pipe 53 by 1-3mm, and a surface of the ribs 63 is in an arc structure; when the tail sheath 6 is sleeved at the lower end of the head sheath 5 from the end close to the mounting portion 12, the tail butt tube 62 is clamped outside the clamping tube 53 through the protruding strip 63, and the lower end portion of the needle tube 4 is positioned in the tail sleeve 61.

In this embodiment, the tail butt joint pipe 62 is clamped outside the clamping pipe 53 through the raised strip 63, so that the tail sheath 6 is clamped outside the needle tube 4 from the lower end, which is beneficial to preventing the needle tube 4 from being pricked to medical staff from the lower end, and is beneficial to ensuring the cleanness of the needle tube 4 and the needle seat 1, and avoiding the needle tube 4 from being contaminated with bacteria.

Referring to fig. 2, preferably, the hub 1 further includes a clamping ring 15 disposed on an outer wall of a lower end of the mounting portion 12, and when the head sheath 5 is sleeved outside the mounting portion 12 of the hub 1 from an end near the fixing portion 11, the clamping ring 15 is located outside the head sheath 5;

the inner wall of the tail butt joint pipe 62 is provided with a ring groove 64, and when the tail sheath 6 is sleeved at the lower end of the head sheath 5 from one end close to the mounting portion 12, the clamping ring 15 is clamped in the ring groove 64 of the tail butt joint pipe 62.

In this embodiment, the provision of the clamping ring 15 is advantageous for reinforcing the connection between the hub 1 and the tail sleeve 61, so that the tail sheath 6 can be clamped to the lower end of the hub 1, and is also advantageous for further reinforcing the connection between the tail sheath 6 and the head sheath 5.

The utility model also provides a dental syringe comprising the dental universal threaded injection needle.

The dental syringe has the advantages corresponding to the dental universal threaded injection needle compared with the prior art, and is not described herein.

Although the utility model is disclosed above, the scope of the utility model is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the scope of the utility model.

Claims (10)

1. The utility model provides a general screw thread formula syringe needle of dentistry for install on the dentistry syringe, a serial communication port, general screw thread formula syringe needle of dentistry is including being used for fixed needle tubing's needle file (1), the inside of needle file (1) be equipped with be used for with dentistry syringe threaded connection's mounting groove (10), one side of mounting groove (10) is formed with opening (100), mounting groove (10) inner wall is followed the opening to the direction of mounting groove (10) bottom has set gradually a plurality of different structure's helicitic texture, and follows the opening to the direction of mounting groove (10) bottom, a plurality of the internal diameter of helicitic texture reduces in proper order.

2. Dental universal screw-type injection needle according to claim 1, characterized in that the screw-type thread structure comprises an english screw-type thread structure (2) and a metric screw-type thread structure (3), the metric screw-type thread structure (3) being arranged close to the opening (100), the english screw-type thread structure (2) being arranged at a side of the metric screw-type thread structure (3) remote from the opening (100).

3. Dental universal screw-type injection needle according to claim 1, further comprising a needle tube (4), said needle tube (4) being inserted onto said needle hub (1) and being glued with epoxy resin.

4. A dental universal screw-type injection needle according to claim 3, wherein the needle holder (1) comprises an integrally formed fixing part (11) and a mounting part (12), a fixing hole (13) is arranged in the middle of the fixing part (11) in a penetrating manner along the axial direction of the needle holder (1), and the needle tube (4) is inserted into the fixing hole (13); the outer diameter of the mounting part (12) is larger than the diameter of the fixing part (11), the mounting groove (10) is formed in the mounting part (12), and the opening (100) is formed in one end, far away from the fixing part (11), of the mounting part (12).

5. Dental universal screw-type injection needle according to claim 4, characterized in that the middle part of the end of the fixing part (11) far away from the mounting part (12) is provided with a conical gap (14), the conical gap (14) is coaxially arranged with the fixing hole (13) and the tip of the conical gap (14) is communicated with the fixing hole (13), and the needle tube (4) is used for being inserted into the fixing hole (13) from the conical gap (14).

6. Dental universal screw-type injection needle according to claim 4, further comprising a head sheath (5) and a tail sheath (6), wherein the head sheath (5) is arranged to be sleeved outside the mounting portion (12) of the needle holder (1) from an end close to the fixing portion (11), and the tail sheath (6) is arranged to be sleeved at the lower end of the head sheath (5) from an end close to the mounting portion (12).

7. The dental universal screw-type injection needle according to claim 6, wherein the head sheath (5) comprises an integrally formed head tube sleeve (51), a head butt tube (52), a bayonet tube (53) and a convex ring (54), the bayonet tube (53) is connected to the lower end of the head butt tube (52) and is arranged along the axial direction of the head sheath (5), the convex ring (54) is arranged on the inner wall of the bayonet tube (53), the inner diameter of the convex ring (54) is smaller than the outer diameter of the mounting part (12) by 1-3mm, and the surface of the convex ring (54) is in an arc-shaped structure; when the head sheath (5) is sleeved outside the mounting part (12) of the needle seat (1) from one end close to the fixing part (11), the clamping tube (53) is clamped outside the mounting part (12) through the convex ring (54), and the upper end part of the needle tube (4) is positioned in the head sheath (51).

8. The dental universal screw-type injection needle according to claim 7, wherein the tail sheath (6) comprises a tail sleeve (61), a tail butt joint pipe (62) and raised strips (63) arranged on the inner wall of the tail butt joint pipe (62), the raised strips (63) are uniformly arranged at intervals along the circumferential direction of the tail butt joint pipe (62), the inner diameter of a circle where the raised strips (63) are positioned is smaller than the outer diameter of the clamping connection pipe (53) by 1-3mm, and the surfaces of the raised strips (63) are in an arc-shaped structure; when the tail sheath (6) is sleeved at the lower end of the head sheath (5) from one end close to the mounting part (12), the tail butt joint pipe (62) is clamped outside the clamping joint pipe (53) through the raised strips (63), and the lower end part of the needle tube (4) is positioned in the tail sleeve (61).

9. Dental universal screw-type injection needle according to claim 8, wherein the needle holder (1) further comprises a snap ring (15) provided at the outer wall of the lower end of the mounting portion (12), the snap ring (15) being located outside the head sheath (5) when the head sheath (5) is sleeved outside the mounting portion (12) of the needle holder (1) from an end close to the fixing portion (11);

the inner wall of the tail butt joint pipe (62) is provided with a ring groove (64), and when the tail sheath (6) is sleeved at the lower end of the head sheath (5) from one end close to the mounting part (12), the clamping ring (15) is clamped in the ring groove (64) of the tail butt joint pipe (62).

10. A dental syringe comprising a dental universal threaded injection needle according to any one of claims 1-9.