Needle depth control device for injection needle tube

Abstract

The utility model relates to the technical field of injection needle devices, and discloses a needle depth control device for an injection needle tube, a sleeve mounting part of a support cylinder seat is conical, a deformation slot is arranged on the peripheral side of the upper part of the support cylinder seat, and a functional module type structure is adopted. The supporting cylinder base is arranged on the upper portion of a needle tube injector in a sleeving mode and is fastened and limited through the fastening rotary sleeve, the supporting cylinder base can be installed with various injectors in a matched mode, and good use flexibility and installation applicability are achieved. After being installed with a needle syringe, the supporting position of the supporting cylinder seat can be flexibly adjusted through sliding, the protruding length of the end of the injection needle can be changed through adjustment, the injection depth of the injection needle can be limited through limiting supporting of the flexible ring seat at the end of the supporting cylinder seat, and patient injury caused by deep puncturing is avoided; the injector has an excellent auxiliary effect on operation of a green hand, and the convenience and the safety of injection operation can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of injection needle technology, specifically to a needle depth control device for injection needle tubes. Background Technology

[0002] A syringe is a common medical device used for subcutaneous or intramuscular injections. It consists of a needle and a syringe barrel. The syringe contains the medication, which is then injected precisely into a specific part of the patient's body through puncture with the needle. It is a commonly used medical device in hospitals and outpatient clinics.

[0003] For injections at specific sites on a patient's body, due to the numerous nerves and tissues present, precise needle insertion depth is required to avoid nerve and tissue damage. This demands a certain level of experience and skill from the operator. However, some inexperienced users often cannot accurately control the needle depth during injection, which can easily lead to nerve and tissue damage due to excessive insertion. This is inconvenient and poses certain safety hazards. Therefore, a needle depth control device for injection syringes is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a needle depth control device for injection syringes to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a needle depth control device for an injection syringe, comprising a depth limiting mechanism installed on the upper part of the syringe, the depth limiting mechanism comprising a support cylinder seat, a fastening sleeve and a flexible ring seat, the sleeve mounting part of the support cylinder seat being tapered, the upper circumferential side of the support cylinder seat being provided with a deformation groove, the support cylinder seat being fitted onto the upper part of the syringe and fastened and limited by the fastening sleeve;

[0006] The flexible ring seat is ring-shaped and can be detachably installed on the lower end of the support cylinder seat. The front of the syringe is provided with an injection needle, which is located at the center of the inner ring of the flexible ring seat after installation.

[0007] Preferably, the upper center of the support cylinder is provided with a mounting sleeve hole, and the upper part of the support cylinder is movably fitted onto the upper part of the syringe barrel through the mounting sleeve hole.

[0008] Preferably, the upper outer periphery of the support cylinder is a conical surface, and multiple deformation grooves are provided, with several deformation grooves evenly arranged in a circular shape on the upper periphery of the support cylinder.

[0009] Preferably, the fastening sleeve is fitted onto the outside of the support cylinder seat, the upper outer periphery of the support cylinder seat is provided with an external thread, the middle part of the fastening sleeve is provided with a fastening thread, and the fastening sleeve is fastened to the upper part of the support cylinder seat by the thread.

[0010] Preferably, the lower part of the support cylinder is conical, and the lower part of the support cylinder is provided with a ring seat mounting port, and the upper part of the flexible ring seat is aligned and fitted with the ring seat mounting port.

[0011] Preferably, the upper part of the flexible ring seat is provided with a fitting ring seat, the outer periphery of the fitting ring seat is provided with an annular protrusion, and the inner periphery of the ring seat mounting opening is provided with an annular groove, so that the annular protrusion and the annular groove are fitted together after installation.

[0012] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects:

[0013] This device employs a modular installation method with a functional structure. The support cylinder is installed on the upper part of the syringe via a threaded fastening mechanism using a fitted sleeve. The simple structure and easy installation allow for compatibility with various syringes, offering good flexibility and applicability. The sleeve portion of the support cylinder features a tapered structure with deformation grooves on its periphery. After installation with the syringe, the support position can be flexibly adjusted by sliding, allowing for changes in the protrusion length of the injection needle. Adjustment is simple and convenient. During injection, the flexible ring at the end of the support cylinder limits the injection depth, preventing injury to the patient from excessively deep insertion. This provides excellent assistance for novice operators and effectively improves the convenience and safety of injection procedures. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the front structure of the present invention and the syringe.

[0016] Figure 2 This is a schematic diagram of the rear structure of the present invention and the syringe after installation;

[0017] Figure 3 This is a schematic diagram of the front structure of the present invention and the syringe after disassembly and assembly.

[0018] Figure 4 This is a schematic diagram of the overall installation structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the overall disassembled front structure of this utility model;

[0020] Figure 6 This is a schematic diagram of the overall disassembled structure of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Syringe; 2. Support sleeve; 3. Fastening sleeve; 4. Flexible ring seat; 5. Injection needle; 6. Deformation groove; 7. External thread; 8. Fastening thread; 9. Annular groove; 10. Annular protrusion. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0024] Example

[0025] Please see Figure 1-6 This utility model provides a technical solution: a needle depth control device for injection syringes, including a depth limiting mechanism installed on the upper part of the syringe 1. The depth limiting mechanism includes a support cylinder 2, a fastening sleeve 3, and a flexible ring seat 4. The support cylinder 2 and the fastening sleeve 3 are both made of medical-grade plastic. Figure 1 As shown, to facilitate connection and installation with the syringe 1, a mounting hole is provided in the upper center of the support cylinder 2. The upper part of the support cylinder 2 is movably fitted onto the upper part of the syringe barrel of the syringe 1 through the mounting hole. The fastening sleeve 3 is fitted onto the outside of the support cylinder 2. To facilitate the installation and fastening of the support cylinder 2, see attached... Figure 5As shown, an external thread 7 is provided on the upper outer periphery of the support cylinder seat 2. To facilitate fastening installation, the outer periphery of the sleeve mounting part of the support cylinder seat 2 is tapered. A fastening screw 8 is provided in the middle of the fastening sleeve 3. The fastening sleeve 3 is fastened to the upper part of the support cylinder seat 2 by the thread. The support cylinder seat 2 is fitted onto the upper part of the syringe 1 and is fastened and limited by the fastening sleeve 3. The installation method adopts a fitted fastening type and a functional modular structure. The support cylinder seat 2 is installed on the upper part of the syringe 1 by fitting the screw fastening sleeve 3. The structure is simple and easy to install. The support cylinder seat 2 has different specifications and models and can be installed with various syringes. It has good flexibility of use and installation applicability.

[0026] To facilitate the adjustment of the support cylinder seat 2, deformation grooves 6 are provided on the upper circumference of the support cylinder seat 2. Multiple deformation grooves 6 are evenly distributed in a circular pattern on the upper circumference of the support cylinder seat 2. The deformation grooves 6 enhance the expansion and deformation capacity of the support cylinder seat 2, facilitating its installation and adjustment. The lower part of the support cylinder seat 2 is conical, and a flexible ring seat 4 is detachably installed on the lower end of the support cylinder seat 2. The sleeve portion of the support cylinder seat 2 adopts a conical structure and has deformation grooves 6 on its circumference. After installation with the syringe 1, the support position of the support cylinder seat 2 can be flexibly adjusted by sliding. This adjustment changes the protrusion length of the injection needle 5. The adjustment operation is simple and convenient. During injection, the limiting support of the flexible ring seat 4 at the end of the support cylinder seat 2 limits the injection depth of the injection needle 5, preventing patient injury caused by excessive puncture. This provides excellent assistance for novice operators and effectively improves the convenience and safety of injection operations.

[0027] The flexible ring seat 4 is a ring-shaped soft ring seat used for support and restraint during injection, as shown in the attached image. Figure 5 As shown, to facilitate the installation and connection of the flexible ring seat 4, a ring seat installation port is provided at the lower part of the support cylinder seat 2. The upper part of the flexible ring seat 4 is aligned and fitted with the ring seat installation port. To limit the installation of the flexible ring seat 4 after installation, a fitting ring seat is provided at the upper part of the flexible ring seat 4. An annular protrusion 10 is provided on the outer periphery of the fitting ring seat, and an annular groove 9 is provided on the inner periphery of the ring seat installation port. After installation, the annular protrusion 10 and the annular groove 9 are fitted together. When the hygiene level allows, the support cylinder seat 2 can be reused by replacing the flexible ring seat 4. The front part of the syringe 1 is provided with an injection needle 5. After installation, the injection needle 5 is located at the center of the inner ring of the flexible ring seat 4. During injection, the injection depth of the injection needle 5 can be limited by the limiting support of the flexible ring seat 4 at the end of the support cylinder seat 2, avoiding patient injury caused by excessive puncture.

[0028] The working principle or structural principle is as follows: When using the device, with the needle cap closed, tighten the fastening sleeve 3 to the loosened position. Then, use the sleeve to install the support cylinder seat 2 on top of the syringe 1. Push the support cylinder seat 2 to its highest position, remove the needle cap, and draw up the medication. Adjust the support height of the support cylinder seat 2 according to the required injection depth by pushing it. After adjustment, tighten the fastening sleeve 3 to secure the support cylinder seat 2. Then, hold the syringe 1 with one hand, disinfect the injection site, and insert the injection needle 5 into the injection site on the upper part of the patient's body. During insertion, when the injection needle 5 reaches the injection depth, the flexible ring seat 4 at the end of the support cylinder seat 2 contacts the patient's skin at the injection site, limiting the depth of the injection needle 5 through contact support to avoid injury to the patient caused by excessive puncture. Finally, press the plunger to complete the injection.

[0029] In summary, this device adopts a set-and-fasten installation method and a modular structure. The support cylinder seat 2 is installed on the upper part of the syringe 1 by the threaded fastening of the set and fastening sleeve 3. The structure is simple and easy to install, and it can be installed with various syringes. It has good flexibility and applicability. The sleeve part of the support cylinder seat 2 adopts a conical structure and has deformation grooves 6 on the periphery. After installation with the syringe 1, the support position of the support cylinder seat 2 can be flexibly adjusted by sliding. The length of the protrusion of the injection needle 5 can be changed by adjustment. The adjustment operation is simple and convenient. During injection, the injection depth of the injection needle 5 can be limited by the limiting support of the flexible ring seat 4 at the end of the support cylinder seat 2, avoiding patient injury caused by deep puncture. It has an excellent auxiliary effect for novice operation and can effectively improve the convenience and safety of injection operation.

[0030] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this utility model. In particular, the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways without departing from the spirit and teachings of this utility model. All such combinations and / or combinations fall within the scope of this utility model.

Claims

1. A needle depth control device for a needle cannula comprising a depth limiting mechanism mounted on the upper part of a needle cannula syringe (1), characterised in that: The depth limiting mechanism comprises a supporting cylinder base (2), a fastening screw sleeve (3) and a flexible ring base (4), the sleeve mounting part of the supporting cylinder base (2) is conically arranged, the upper peripheral side of the supporting cylinder base (2) is provided with a deformation slot (6), the supporting cylinder base (2) is sleeved on the upper part of the needle cylinder syringe (1) and fastened by the fastening screw sleeve (3); The flexible ring base (4) is ring-shaped, the flexible ring base (4) is detachably mounted on the lower end side of the supporting cylinder base (2), the front part of the needle cylinder syringe (1) is provided with an injection needle (5), and the injection needle (5) is located at the inner ring center of the flexible ring base (4) after installation.

2. A needle depth control device for a syringe needle as defined in claim 1, characterized in that: The upper side of the supporting cylinder base (2) is provided with a mounting sleeve hole, and the upper part of the supporting cylinder base (2) is movably sleeved on the upper part of the needle cylinder of the needle cylinder syringe (1) through the mounting sleeve hole.

3. A needle depth control device for a syringe needle as defined in claim 2, characterized in that: The upper peripheral side of the supporting cylinder base (2) is conically arranged, the deformation slot (6) is provided with a plurality of deformation slots (6) which are uniformly arranged in a circumferential manner on the upper peripheral side of the supporting cylinder base (2).

4. A needle depth control device for a syringe needle as defined in claim 3, characterized in that: The fastening screw sleeve (3) is sleeved on the outside of the supporting cylinder base (2), the upper peripheral side of the supporting cylinder base (2) is provided with an external thread (7), the middle part of the fastening screw sleeve (3) is provided with a fastening screw port (8), and the fastening screw sleeve (3) is fastened and mounted on the upper part of the supporting cylinder base (2) by screwing.

5. A needle depth control device for a syringe needle as defined in claim 1, wherein: The lower part of the supporting cylinder base (2) is conically arranged, the lower part of the supporting cylinder base (2) is provided with a ring base mounting port, and the upper part of the flexible ring base (4) is embedded and mounted in the ring base mounting port in a positionally matched manner.

6. A needle depth control device for a syringe needle as defined in claim 5, wherein: The upper part of the flexible ring base (4) is provided with an embedded ring base, the outer peripheral side of the embedded ring base is provided with an annular protrusion (10), the inner peripheral side of the ring base mounting port is provided with an annular groove (9), and the annular protrusion (10) and the annular groove (9) are embedded and mounted after installation.

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