CN211327470U - A syringe for intramuscular injection - Google Patents

Abstract

The utility model relates to the technical field of syringes, in particular to a syringe for intramuscular injection, comprising a syringe, a needle, a piston, a piston rod and a sleeve. The piston is fixed with the end of the piston rod, and the piston and The piston rod is arranged inside the needle cylinder, the needle head is arranged at the end of the needle cylinder, an opening is arranged at one end of the sleeve, and a small hole is arranged at the other end of the sleeve, and the needle cylinder is slidably arranged on the The inside of the sleeve enables the needle to protrude from the small hole, and a locking device is arranged between the syringe and the sleeve. The syringe can be used. By adjusting the length of the needle extending out of the sleeve, the It can reduce the situation that the needle is inserted too deeply or the needle is inserted too shallowly for the patient, avoid the patient's discomfort caused by the needle insertion too deep or too shallow, prevent the patient from suffering from illness and infection at the injection site, and ensure the patient's health.

Description

A syringe for intramuscular injection

technical field

The utility model relates to the technical field of syringes, in particular to a syringe for intramuscular injection.

Background technique

Injection refers to the use of medical devices such as syringes to inject liquids into the human body to achieve the purpose of diagnosis, treatment and prevention of diseases. Depending on the purpose and type of injection, there are different requirements for the injection site, angle and depth.

Because the length of the needle of the syringe cannot be changed, and the level of medical staff varies, it is often impossible to accurately grasp the depth of the injection during the injection operation. Generally, the depth of injection is judged based on the medical staff's own experience, and irregular injections are prone to occur; in addition, due to the gradual increase in chronic diseases in recent years, more and more patients use themselves or their family members to inject drugs for themselves. In addition, it is difficult to ensure the accuracy of injection; at the same time, due to the different degrees of obesity of patients, the length of the needle inserted into the human body will also be different, and the phenomenon that the liquid medicine is not injected into the muscles of the obese patient, or the needle inserted into the thin patient The deeper muscles cause discomfort in thin patients. These injection irregularities can affect the therapeutic effect of the drug and increase the incidence of disease and infection at the injection site.

In the current syringe, the hand of the syringe is straight and relatively short, and it is basically impossible to achieve one-handed operation during the injection operation. It is proved that the needle has pierced the blood vessel, and the injected drug may cause adverse effects due to its high concentration. Pull back to observe whether there is blood returning, which makes the injection process complicated and troublesome, and increases the labor intensity of nurses.

SUMMARY OF THE INVENTION

The purpose of the invention of the present utility model is: for the prior art, the length of the needle of the syringe cannot be changed, and when the medical staff injects the medicine to the patient, the length of the needle inserted into the patient is mainly judged according to the level of the medical staff, so that some patients may There are cases where the needle is inserted too deeply or the needle is inserted too shallowly, a syringe for intramuscular injection is provided.

In order to achieve the above purpose, the technical scheme adopted by the present utility model is:

A syringe for intramuscular injection, comprising a syringe, a needle, a piston, a piston rod and a sleeve, the piston is fixed with the end of the piston rod, the piston and the piston rod are arranged inside the syringe, and the The needle is arranged at the end of the needle cylinder, one end of the sleeve is provided with an opening, and the other end of the sleeve is provided with a small hole, and the needle cylinder is slidably arranged in the sleeve so that the needle can protrude A locking device is arranged between the small hole, the needle cylinder and the sleeve.

As a preferred solution of the present invention, the outer wall of the needle cylinder is provided with a plurality of clamping grooves in the axial direction, the inner wall of the sleeve is provided with clamping buckles matching the clamping grooves, and the clamping grooves are arranged with the clamping grooves. The snap fit constitutes the locking device. The medical staff rotates the needle cylinder inside the sleeve to separate the snap from the slot, and moves the needle cylinder axially until the length of the needle sticking out of the sleeve is appropriate. By rotating the needle cylinder and through the cooperation of the buckle and the card groove, the needle cylinder and the sleeve are locked, and the phenomenon that the needle cylinder moves axially relative to the sleeve does not occur.

As a preferred solution of the present invention, the card slot is a U-shaped groove, and the buckle is an insertion rod matched with the U-shaped groove, so that the needle barrel and the sleeve can be locked through the cooperation of the U-shaped groove and the insertion rod. And by rotating the needle cylinder to separate the insertion rod from the U-shaped groove, the axial movement of the needle cylinder can make the insertion rod cooperate with other U-shaped grooves, so as to realize the adjustment of the length of the needle protruding from the sleeve.

As a preferred solution of the present invention, the snap groove is a tapered groove, and the snap fits the tapered rod with the tapered groove, so that the syringe and the sleeve can be matched with the tapered rod through the tapered groove Locking is achieved, and the conical rod is separated from the conical groove by rotating the needle cylinder, and the axial movement of the needle cylinder can make the conical rod cooperate with other conical grooves, so as to realize the adjustment of the length of the needle protruding from the sleeve.

As a preferred solution of the present invention, the inner wall of the sleeve is provided with a plurality of clamping grooves in the axial direction, and the outer wall of the needle cylinder is provided with clamping buckles matching the clamping grooves, and the clamping grooves are arranged with all the clamping grooves. The buckle constitutes the locking device. The medical staff rotates the syringe inside the sleeve to separate the buckle from the slot, and moves the syringe axially. When the length of the needle sticking out of the sleeve is appropriate, By rotating the needle cylinder and through the cooperation of the buckle and the card groove, the needle cylinder and the sleeve are locked, and the phenomenon that the needle cylinder moves axially relative to the sleeve does not occur.

As a preferred solution of the present invention, the card slot is a U-shaped groove, and the buckle is an insertion rod matched with the U-shaped groove, so that the needle barrel and the sleeve can be locked through the cooperation of the U-shaped groove and the insertion rod. And by rotating the needle cylinder to separate the insertion rod from the U-shaped groove, the axial movement of the needle cylinder can make the insertion rod cooperate with other U-shaped grooves, so as to realize the adjustment of the length of the needle protruding from the sleeve.

As a preferred solution of the present invention, the snap groove is a tapered groove, and the snap fits the tapered rod with the tapered groove, so that the syringe and the sleeve can be matched with the tapered rod through the tapered groove Locking is achieved, and the conical rod is separated from the conical groove by rotating the needle cylinder, and the axial movement of the needle cylinder can make the conical rod cooperate with other conical grooves, so as to realize the adjustment of the length of the needle protruding from the sleeve.

As a preferred solution of the present invention, the outer wall of the barrel is provided with an external thread, the inner wall of the sleeve is provided with an internal thread matching the external thread, and the external thread cooperates with the internal thread to form the lock In the device, the syringe and the sleeve are connected by threads, so that the syringe can move axially relative to the sleeve, the cooperation of the threads can realize the locking of the syringe and the sleeve, and the threaded structure realizes two functions, making the syringe structure simple.

As a preferred solution of the present invention, two handles are arranged on the outer side of the sleeve, and the two handles are symmetrical with respect to the axis of the sleeve. When the medical staff is injecting, the thumb presses the end of the piston rod. The upper, index and middle fingers rest on the two handles for leverage, enabling quick injections.

As a preferred solution of the present invention, the handle is provided with a collar, the end of the piston rod away from the piston is provided with a collar, and the thumb, index finger and middle finger are all placed in the collar, and after the needle is inserted into the injection site , One hand can use the thumb to recover to observe whether the blood is returning, so that the blood returning operation can be completed with one hand, and the labor intensity of the medical staff is reduced.

As a preferred solution of the present invention, an arc-shaped groove is provided on the side of the handle close to the needle head, and the index finger and the middle finger are in contact with the arc-shaped groove. comfort of personnel.

As a preferred solution of the present invention, the sleeve and the syringe are both medical transparent materials, the syringe is provided with a volume scale, and the medical transparent material is PVC.

As a preferred solution of the present invention, one end of the sleeve away from the opening is configured to be tapered, and the small hole is configured in the middle of the tapered sleeve.

To sum up, due to the adoption of the above-mentioned technical solutions, the beneficial effects of the present utility model are:

1. A sleeve is arranged outside the barrel of a traditional syringe, and the barrel is slidably arranged in the sleeve. During the sliding process of the barrel, the medical staff can adjust the amount of the needle protruding out of the sleeve according to the specific situation of the patient. Then, the syringe and the sleeve are fixed by the locking device, so that the syringe can be used. By adjusting the length of the needle sticking out of the sleeve, it can reduce the needle insertion too deep or the needle too shallow for the patient. It avoids the patient's discomfort caused by the needle being inserted too deep or too shallow, avoids the risk of disease and infection at the injection site for the patient, and ensures the patient's health.

2. Since the existing syringes need to be recapped and then discarded after use, when medical staff fix the protective cap on the needle, the needle is too small and personal negligence, etc. The situation of needle sticking will cause infection of medical staff. With this solution, after the injection is completed, the syringe slides in the sleeve so that all the needles enter the sleeve, and then is locked by the locking device, so that the medical staff can be prevented from being needled by the needle. The situation of puncture avoids the phenomenon of medical staff being infected.

Description of drawings

Fig. 1 is the structural representation of the present utility model;

Fig. 2 is the projection view of A direction in Fig. 1;

Fig. 3 is the sectional view of B-B in Fig. 2;

Fig. 4 is the enlarged view of C place in Fig. 3;

5 is a cross-sectional view of another structure of B-B in FIG. 2;

Fig. 6 is the enlarged view of D place in Fig. 5;

Marking in the figure: 1-syringe, 2-needle, 3-piston, 4-piston rod, 5-sleeve, 6-opening, 7-hole, 8-locking device, 9-card slot, 10-card Buckle, 13-handle, 14-collar, 15-curved groove, 16-volume scale.

Detailed ways

The present utility model will be described in detail below in conjunction with the accompanying drawings.

In order to make the purpose, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

Example 1

As shown in Figures 1-6, a syringe for intramuscular injection includes a syringe 1, a needle 2, a piston 3, a piston rod 4 and a sleeve 5, the piston 3 is fixed with the end of the piston rod 4 , the piston 3 and the piston rod 4 are arranged inside the syringe 1, the needle 2 is arranged at the end of the syringe 1, one end of the sleeve 5 is provided with an opening 6, and the other end of the sleeve 5 is arranged There is a small hole 7, the needle barrel 1 is slidably arranged in the sleeve 5 so that the needle 2 can extend out of the small hole 7, and a lock is provided between the needle barrel 1 and the sleeve 5 device 8.

As shown in FIG. 3 and FIG. 4 , the outer wall of the needle cylinder 1 is provided with a plurality of clamping grooves 9 in the axial direction, and the inner wall of the sleeve 5 is provided with a clamping buckle 10 matching the clamping groove 9, so The locking device 8 is composed of the card slot 9 and the buckle 10, the card slot 9 is a U-shaped groove, and the buckle 10 is a rod that matches the U-shaped groove, so that the needle cylinder and the The sleeve can be locked through the cooperation of the U-shaped groove and the insertion rod, and the insertion rod can be separated from the U-shaped groove by rotating the needle cylinder. The axial movement of the needle cylinder can make the insertion rod cooperate with other U-shaped grooves, so as to adjust the needle extension out the length of the sleeve.

In addition to the above-mentioned structure in which the clamping groove is a U-shaped groove, as shown in FIG. 5 and FIG. 6 , the clamping groove 9 is a tapered groove, and the buckle 10 is a tapered rod matched with the tapered groove.

As shown in FIG. 1 , the outer side of the sleeve 5 is provided with two handles 13 , and the two handles 13 are symmetrical with respect to the axis of the sleeve 5 . The handle 13 is provided with a collar 14 , the piston The end of the rod 4 away from the piston 3 is provided with a collar 14, the handle 13 is provided with an arc-shaped groove on the side close to the needle 2, the sleeve 5 and the syringe 1 are both medical transparent materials , the syringe 1 is provided with a volume scale 16, the medical transparent material is PVC, the end of the sleeve 5 away from the opening 6 is set to be tapered, and the small hole 7 is set in the tapered sleeve 5 the middle of.

Example 2

In this embodiment, the inner wall of the sleeve 5 is provided with a plurality of clamping grooves 9 in the axial direction, and the outer wall of the needle cylinder 1 is provided with buckles 10 matching the clamping grooves 9. The clamping grooves 9 and the buckle 10 form the locking device 8, and the rest of the structure is the same as that of the first embodiment.

Example 3

In this embodiment, the outer wall of the barrel 1 is provided with an external thread, the inner wall of the sleeve 5 is provided with an internal thread matching the external thread, and the external thread cooperates with the internal thread to form the locking device 8. The rest of the structure is the same as that of Example 1.

The specific working process of the present application: when the medical staff injects the patient, by sliding the syringe 1 on the sleeve 5, the length of the needle 2 extending out of the small hole 7 of the sleeve 5 can be adjusted, so that the length of the needle 2 can be adjusted. Adapt to patients with different physiques (fat or thin), after the injection is completed, continue to slide the syringe 1 on the sleeve 5, so that the needle 2 is all recovered into the sleeve 5, so as to avoid the situation that the medical staff is punctured by the needle and avoid the medical staff The phenomenon of people being infected.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection of the utility model.

Claims (10)

1. a syringe for intramuscular injection, characterized in that, comprising a syringe (1), a needle (2), a piston (3), a piston rod (4) and a sleeve (5), the piston (3) It is fixed with the end of the piston rod (4), the piston (3) and the piston rod (4) are arranged inside the barrel (1), and the needle (2) is arranged on the inner side of the barrel (1). An opening (6) is provided at one end of the sleeve (5), a small hole (7) is provided at the other end of the sleeve (5), and the needle cylinder (1) is slidably arranged on the sleeve ( 5) The needle (2) can protrude out of the small hole (7), and a locking device (8) is provided between the needle barrel (1) and the sleeve (5). 2. The syringe for intramuscular injection according to claim 1, characterized in that, the outer wall of the syringe (1) is provided with a plurality of clamping grooves (9) in the axial direction, and the sleeve (5) The inner wall of the device is provided with a buckle (10) matched with the card slot (9), and the card slot (9) cooperates with the buckle (10) to form the locking device (8). 3. The syringe for intramuscular injection according to claim 2, wherein the snap groove (9) is a U-shaped groove, and the snap button (10) is an insert rod matched with the U-shaped groove . 4. The syringe for intramuscular injection according to claim 2, wherein the snap groove (9) is a tapered groove, and the snap (10) is a tapered shape matched with the tapered groove rod. 5. The syringe for intramuscular injection according to claim 1, characterized in that, the inner wall of the sleeve (5) is provided with a plurality of clamping grooves (9) in the axial direction, and the syringe (1) A snap (10) matching the snap slot (9) is provided on the outer wall of the device, and the snap slot (9) and the snap snap (10) form the locking device (8). 6. The syringe for intramuscular injection according to claim 1, wherein the outer wall of the barrel (1) is provided with an external thread, and the inner wall of the sleeve (5) is provided with a matching thread with the external thread. An inner thread, the outer thread cooperates with the inner thread to form the locking device (8). 7. The syringe for intramuscular injection according to claim 1, wherein two handles (13) are provided on the outside of the sleeve (5), and the two handles (13) are opposite to the sleeve The axis of the barrel (5) is symmetrical. 8 . The syringe for intramuscular injection according to claim 7 , wherein a collar ( 14 ) is provided on the handle ( 13 ), and the piston rod ( 4 ) is away from the piston ( 3 ). 9 . One end is provided with a collar (14). 9 . The syringe for intramuscular injection according to claim 7 , wherein an arc-shaped groove is provided on the side of the handle ( 13 ) close to the needle ( 2 ). 10 . 10. The syringe for intramuscular injection according to claim 1, wherein the sleeve (5) and the syringe (1) are medical transparent materials, and the syringe (1) is provided with With volume scale (16).

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