Disposable puncture needle assembly with anesthetic injection function

Abstract

The utility model discloses a disposable puncture needle assembly with an anesthetic injection function, which comprises a puncture needle (1) used for puncturing a patient, the puncture needle (1) comprises a main body (2), the front end of the main body (2) is provided with a needle body (3), the rear end of the main body (2) is in threaded connection with a liquid medicine tube (4), one end of the liquid medicine tube (4) is provided with a valve (5), and the other end of the liquid medicine tube (4) is provided with a piston rod (6); the remaining needle (7) is used for infusion, the needle body (3) of the puncture needle (1) penetrates through the remaining needle (7), and the remaining needle (7) is provided with a fixing piece (8) used for being fixed to the skin of a patient. According to the anesthetic puncture needle, anesthetic injection can be carried out while puncture is achieved, operation steps are simplified, and anesthetic injection accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the field of puncture needle equipment, in particular to a disposable puncture needle assembly with an anesthetic injection function. Background Art

[0002] Puncture is a treatment method often used in medical treatment. Puncture can deliver drugs accurately to the affected area. At present, a puncture assembly is needed for tumor treatment. The existing puncture assembly includes a puncture needle and an indwelling needle. When using it, the puncture piece is first used to determine the drug delivery position and puncture is performed. Then, the anesthetic is injected into the patient's affected area at the puncture port, and then the indwelling needle is placed. However, this method is cumbersome to operate, and multiple cumbersome operations may cause discomfort to the patient. Secondly, because the anesthetic injection is not performed at the same time as the puncture, but after the indwelling needle is placed, the injection position may be deviated, reducing the accuracy of the anesthetic injection. Utility Model Content

[0003] The purpose of the utility model is to provide a disposable puncture needle assembly with an anesthetic injection function. The utility model can realize the injection of anesthetics at the same time as puncture, simplify the operation steps, and improve the accuracy of anesthetic injection.

[0004] The technical solution of the utility model is as follows: a disposable puncture needle assembly with an anesthetic injection function comprises a puncture needle used for puncturing a patient, wherein the puncture needle comprises a main body, a needle body is arranged at the front end of the main body, a medicine liquid tube is threadedly connected to the rear end of the main body, a valve is arranged on the medicine liquid tube, and a piston rod is passed through the medicine liquid tube;

[0005] An indwelling needle is used for infusion, the needle body of the puncture needle passes through the indwelling needle, and the indwelling needle has a fixing plate for fixing on the patient's skin;

[0006] The protective sleeve is used for protecting the indwelling needle and the puncture needle. The protective sleeve comprises a root sleeve and a needle tube sleeve. The main body is embedded in the root sleeve, and the needle body and the indwelling needle are inserted in the needle tube sleeve.

[0007] In the above-mentioned disposable puncture needle assembly with anesthetic injection function, the valve includes a seat body arranged in the medicine liquid tube, a vertical channel is arranged in the seat body, and a first transverse channel and a second transverse channel are arranged on both sides of the vertical channel, which are staggered with each other. The vertical channel includes an upper channel connected to the first transverse channel and a lower channel connected to the second transverse channel, and a conical surface is arranged between the upper channel and the lower channel; an elastic switch member is arranged in the vertical channel, and the opening and closing surface of the elastic switch member is in close contact with the conical surface.

[0008] In the aforementioned disposable puncture needle assembly with anesthetic injection function, the tip of the needle body is provided with a tip protection piece.

[0009] In the aforementioned disposable puncture needle assembly with anesthetic injection function, a needle body fixing part is provided at one end of the main body and located at the needle body, a first arc-shaped piece is provided on the needle body fixing part, a second arc-shaped piece is provided at the end of the first arc-shaped piece, and a stepped groove for positioning the tip protection piece is formed between the first arc-shaped piece and the second arc-shaped piece.

[0010] In the aforementioned disposable puncture needle assembly with anesthetic injection function, a plane piece is provided on the main body and at one end of the needle body, and a protrusion is provided at the upper end of the plane piece; a circular ring portion is provided at the root of the indwelling needle, and a groove for engaging the protrusion is provided on the circular ring portion.

[0011] In the aforementioned disposable puncture needle assembly with anesthetic injection function, side strips are provided on the inner side wall of the root sleeve of the protective sleeve, and arc openings engaging with the side strips are provided on both sides of the planar sheet.

[0012] In the aforementioned disposable puncture needle assembly with anesthetic injection function, a plurality of horizontal strips are evenly arranged on the main body.

[0013] In the aforementioned disposable puncture needle assembly with anesthetic injection function, the fixing sheet is a foldable sheet structure, and a plurality of fixing sheets are evenly arranged on the arc surface of the indwelling needle.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] 1. In the present invention, the medicine liquid tube is screwed on the tail end of the main body, and the puncture needle is used to puncture the patient's affected part. At the same time, the valve on the medicine liquid tube is opened, and the piston rod is injected to inject the anesthetic into the puncture needle, and then flows into the patient's affected part to achieve anesthesia; the medicine liquid tube can also be unscrewed, and the puncture needle is used for puncture, and the anesthetic is injected into the puncture needle by using a conventional syringe; by installing an anesthetic injection mechanism at the tail end of the main body of the puncture needle, anesthetic injection can be achieved during puncture, simplifying the operation steps and improving the accuracy of anesthetic injection.

[0016] 2. In the valve, under normal conditions, the opening and closing surfaces of the elastic switch member fit with the conical surface. Pressing the elastic switch member causes the elastic switch member to be pressed downward, and the vertical channel is connected with the transverse channels on both sides. The piston rod pushes the liquid medicine into the transverse channel on one side and enters the puncture needle from the transverse channel on the other side. The operation is simple and easy to use.

[0017] 3. Through the connection between the card slot and the protrusion, a better combination connection of the puncture needle and the indwelling needle is achieved, which is convenient for packaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2It is a schematic diagram of the structure of the medicine liquid tube;

[0020] Figure 3 is a schematic diagram of a valve;

[0021] Figure 4 A schematic diagram of the subject;

[0022] Figure 5 is a schematic diagram of a tip protection member;

[0023] Figure 6 is a schematic diagram of a fixed plate;

[0024] Figure 7 is a schematic diagram of a protective cover;

[0025] Figure 8 It is a combination diagram of the utility model.

[0026] Explanation of the marks in the accompanying drawings: 1-puncture needle, 2-main body, 3-needle body, 4-drug liquid tube, 5-valve, 6-piston rod, 7-indwelling needle, 8-fixed plate, 9-protective sleeve, 10-root sleeve, 11-needle tube sleeve, 12-tip protection piece, 13-needle body fixing part, 14-first arc-shaped piece, 15-first arc-shaped piece, 16-step groove, 17-plane piece, 18-protrusion, 19-circular ring part, 20-slot, 21-side strip, 22-arc mouth, 23-horizontal strip, 51-seat body, 52-vertical channel, 53-first transverse channel, 54-second transverse channel, 55-upper channel, 56-lower channel, 57-conical surface, 58-elastic switch member. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0028] Embodiment 1: A disposable puncture needle assembly with an anesthetic injection function includes a puncture needle 1 for puncturing a patient. The puncture needle 1 includes a main body 2, as shown in the attached Figure 1 and 8 As shown, a needle body 3 is installed at the front end of the main body 2, and a medicine liquid tube 4 is connected to the rear end of the main body 2 through a thread. A valve 5 is installed on the medicine liquid tube 4, and a piston rod 6 is passed through the medicine liquid tube 4; the tip of the needle body 3 is covered with a tip protection member 12, as shown in the attached Figure 5 As shown, the tip protection piece is two inclined sheets, which form a protection triangle to protect the tip of the needle body. The protection triangle can be opened by pressing the inclined sheets on both sides.

[0029] The valve 5 includes a seat body 51 disposed in the liquid medicine tube 4. Figure 2 and 3As shown, the seat body 51 has a vertical channel 52, and the two sides of the vertical channel 52 have a first transverse channel 53 and a second transverse channel 54 that are staggered with each other. The first transverse channel is connected to the channel in the puncture needle, and the second transverse channel is connected to the medicine liquid tube. After the vertical channel and the transverse channel are connected, the anesthetic passes through the second transverse channel, the vertical channel and the first transverse channel in sequence. The vertical channel 52 includes an upper channel 55 connected to the first transverse channel 53 and a lower channel 56 connected to the second transverse channel 54. A conical surface 57 is formed between the upper channel 55 and the lower channel 56; the vertical channel 52 includes an upper channel 55 connected to the first transverse channel 53 and a lower channel 56 connected to the second transverse channel 54. An elastic switch 58 is installed in the channel 52, and the opening and closing surface of the elastic switch 58 is in close contact with the conical surface 57. The elastic switch includes a rod body, and a sealing ring is installed between the rod body and the seat body. The end of the rod body is arranged on the outside of the drug liquid tube, and the tail end of the rod body is a conical structure. A spring is installed at the lower end of the rod body. Normally, the conical structure fits the conical surface. Pressing the elastic switch member causes the elastic switch member to be pressed down, and the vertical channel is connected with the transverse channels on both sides. The piston rod pushes the drug liquid into the transverse channel on one side and enters the puncture needle from the transverse channel on the other side. The operation is simple and convenient to use. A nut is installed at the lower end of the seat body. Unscrewing the nut can remove the spring and the rod body; the main body 2 is evenly provided with a plurality of horizontal bars 23 to improve the stability of holding and stabilize the holding of the main body. There are two ways to inject anesthetics. The end of the drug liquid tube is an external thread, and the drug liquid tube is screwed on the tail end of the main body to inject the drug liquid. The other way is to use a conventional syringe to inject the drug liquid from the tail end of the main body.

[0030] One end of the main body 2 is provided with a needle body fixing portion 13 at the needle body 3. Figure 4 As shown, the needle body fixing part 13 has a first arc-shaped piece 14, and the end of the first arc-shaped piece 14 has a second arc-shaped piece 15, and a stepped groove 16 for positioning the tip protection part 12 is formed between the first arc-shaped piece 14 and the second arc-shaped piece 15. When the tip protection part is moved backward along the needle body, the tail end of the tip protection part will be stuck in the stepped groove, and the tip protection part will be firmly positioned, which is convenient for the needle body to puncture. The main body 2 and one end of the needle body 3 have a flat piece 17, and the upper end of the flat piece 17 has a protrusion 18; the root of the indwelling needle 7 has a circular ring part 19, and the circular ring part 19 has a card slot 20 for engaging the protrusion 18. Through the connection of the card slot and the protrusion, a better combination connection of the puncture needle and the indwelling needle is achieved, which is convenient for packaging.

[0031] The indwelling needle 7 is used for infusion. The needle body 3 of the puncture needle 1 passes through the indwelling needle 7. The indwelling needle 7 has a fixing sheet 8 for fixing on the patient's skin. The fixing sheet 8 is a foldable sheet structure, and multiple fixing sheets 8 are evenly arranged on the arc surface of the indwelling needle 7. Figure 6As shown, a paper ring body is sleeved on the indwelling needle, and two symmetrical fixing plates are provided at one end of the paper ring body. When the indwelling needle is to be fixed, the fixing plates are folded so that the fixing plates are parallel to the ends of the indwelling needle, and then the fixing plates are attached to the patient's skin with adhesive tape to ensure the stability of the placement of the indwelling needle.

[0032] The protective cover 9 is used to protect the indwelling needle 7 and the puncture needle 1. Figure 7 As shown, the protective sleeve 9 includes a root sleeve 10 and a needle sleeve 11, the main body 2 is embedded in the root sleeve 10, and the needle body 3 is inserted into the needle sleeve 11. When packaging, the puncture needle will be inserted into the indwelling needle, and then the assembly will be inserted into the protective sleeve, and finally packaged. The inner side wall of the root sleeve 10 of the protective sleeve 9 has a side strip 21, and the two sides of the plane sheet 17 have arc openings 22 that are engaged with the side strips 21. This structure mainly realizes the combined connection between the puncture needle and the protective sleeve, and improves the stability after the combination.

[0033] Embodiment 2: A disposable puncture needle assembly with an anesthetic injection function comprises a puncture needle 1 for puncturing a patient, wherein the puncture needle 1 comprises a main body 2, a needle body 3 is mounted at the front end of the main body 2, a drug liquid tube 4 is threadedly connected to the rear end of the main body 2, a valve 5 is mounted at one end of the drug liquid tube 4, and a piston rod 6 is mounted at the other end of the drug liquid tube 4;

[0034] The indwelling needle 7 is used for infusion. The needle body 3 of the puncture needle 1 passes through the indwelling needle 7. The indwelling needle 7 has a fixing sheet 8 for fixing on the patient's skin. The fixing sheet 8 is a foldable sheet structure, and multiple fixing sheets 8 are evenly arranged on the arc surface of the indwelling needle 7. A paper ring body is sleeved on the indwelling needle, and one end of the paper ring body has three evenly arranged fixing sheets. When the indwelling needle is to be fixed, the fixing sheet is folded so that the fixing sheet is parallel to the end of the indwelling needle, and then the fixing sheet is attached to the patient's skin by tape to ensure the stability of the placement of the indwelling needle;

[0035] The protective cover 9 is used to protect the indwelling needle 7 and the puncture needle 1. The protective cover 9 includes a root cover 10 and a needle tube cover 11. The main body 2 is embedded in the root cover 10, and the needle body 3 and the indwelling needle 7 are inserted into the needle tube cover 11.

[0036] The working principle of the utility model is as follows: the medicine liquid tube is screwed on the tail end of the main body, and the puncture needle is used to puncture the patient's affected part, and at the same time, the valve on the medicine liquid tube is opened, and the piston rod is injected to input the anesthetic into the puncture needle, and then flows into the patient's affected part to achieve anesthesia; the medicine liquid tube can also be unscrewed, and puncture is performed through the puncture needle, and the anesthetic is injected into the puncture needle by using a conventional syringe; by installing an anesthetic injection mechanism at the tail end of the main body of the puncture needle, anesthetic injection can be achieved during puncture, thereby simplifying the operating steps and improving the accuracy of anesthetic injection.

[0037] The above embodiments only express the implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. In this embodiment, up, down, left, right, front, and back only represent their relative positions and do not represent their absolute positions. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A disposable puncture needle assembly with an anesthetic injection function, characterized in that: The puncture needle (1) comprises a main body (2), the front end of the main body (2) is provided with a needle body (3), the rear end of the main body (2) is connected with a liquid medicine tube (4), the liquid medicine tube (4) is provided with a valve (5), and a piston rod (6) is inserted into the liquid medicine tube (4); An indwelling needle (7) is used for infusion, wherein the needle body (3) of the puncture needle (1) passes through the indwelling needle (7), and the indwelling needle (7) has a fixing plate (8) for fixing on the patient's skin; A protective sleeve (9) is used to protect an indwelling needle (7) and a puncture needle (1), the protective sleeve (9) comprising a root sleeve (10) and a needle tube sleeve (11), the main body (2) being embedded in the root sleeve (10), and the needle body (3) and the indwelling needle (7) being inserted into the needle tube sleeve (11).

2. The disposable puncture needle assembly with anesthetic injection function according to claim 1, characterized in that: The valve (5) comprises a seat body (51) arranged in the liquid medicine tube (4), a vertical channel (52) being arranged in the seat body (51), a first transverse channel (53) and a second transverse channel (54) being arranged offset from each other on both sides of the vertical channel (52), the vertical channel (52) comprising an upper channel (55) communicating with the first transverse channel (53) and a lower channel (56) communicating with the second transverse channel (54), a conical surface (57) being arranged between the upper channel (55) and the lower channel (56); an elastic switch component (58) being arranged in the vertical channel (52), an opening and closing surface of the elastic switch component (58) being in close contact with the conical surface (57).

3. The disposable puncture needle assembly with anesthetic injection function according to claim 1, characterized in that: The tip of the needle body (3) is provided with a tip protection piece (12).

4. The disposable puncture needle assembly with anesthetic injection function according to claim 3, characterized in that: A needle body fixing portion (13) is provided at one end of the main body (2) and located at the needle body (3); a first arc-shaped piece (14) is provided on the needle body fixing portion (13); a second arc-shaped piece (15) is provided at the end of the first arc-shaped piece (14); and a stepped groove (16) for positioning the tip protection piece (12) is formed between the first arc-shaped piece (14) and the second arc-shaped piece (15).

5. The disposable puncture needle assembly with anesthetic injection function according to claim 1, characterized in that: A plane sheet (17) is provided on the main body (2) and at one end of the needle body (3), and a protrusion (18) is provided at the upper end of the plane sheet (17); a circular ring portion (19) is provided at the root of the indwelling needle (7), and a groove (20) for engaging the protrusion (18) is provided on the circular ring portion (19).

6. The disposable puncture needle assembly with anesthetic injection function according to claim 5, characterized in that: The inner side wall of the root sleeve (10) of the protective sleeve (9) is provided with a side strip (21), and both sides of the plane sheet (17) are provided with arc openings (22) engaged with the side strip (21).

7. The disposable puncture needle assembly with anesthetic injection function according to claim 1, characterized in that: A plurality of horizontal strips (23) are evenly arranged on the main body (2).

8. The disposable puncture needle assembly with anesthetic injection function according to claim 1, characterized in that: The fixing sheet (8) is a foldable sheet structure, and a plurality of fixing sheets (8) are evenly arranged on the arc surface of the indwelling needle (7).

Images