CN209996921U - pressure sore prevention indwelling needle - Google Patents

Abstract

An indwelling needle for preventing pressure ulcers, which effectively solves the problems that patients use the indwelling needle for a long time to easily cause pressure ulcers on the skin and inconvenient operation by medical personnel, which comprises a casing and a steel needle, and the casing is provided with a sleeve , a piston block is arranged in the sleeve, a first tension spring is connected between the rear end of the piston block and the sleeve, the rear end of the piston block is fixedly connected with a limit pin, the outer part of the steel needle is sheathed with a circular block, the circular The shape block is provided with a limit hole that can be matched with a limit pin, the limit pin cooperates with the limit hole on the circular block to form a limit structure, the outer part of the sleeve is provided with an airbag, and the inside of the airbag is provided with a third A spring presses the air bag, the air bag recovers and deforms to form a negative pressure inside the air bag, and the negative pressure in the air bag cooperates with the piston block to form a structure in which the piston block slides forward. It reduces the rejection of patients and improves the work efficiency of medical staff.

Description

An indwelling needle for preventing pressure ulcers

technical field

The utility model relates to the technical field of medical devices, in particular to an indwelling needle for preventing pressure ulcers.

Background technique

Indwelling needle is a commonly used medical device in nursing work. It is easy to use and reduces the number of punctures for patients, thereby reducing the repeated puncturing during clinical infusion, reducing the pain of puncturing for patients and the workload of clinical nurses. has been widely used in clinical practice.

However, the shell of the indwelling needle is hard, and prolonged use will cause pressure sores on the patient's skin, especially for children, whose skin is more sensitive and more likely to damage the skin after prolonged use. It is easy to increase the resistance of children, which is not conducive to the work of medical staff. In addition, the conventional indwelling needle needs to use the needle handle to pull the steel needle out after the puncture is completed, which is inconvenient to operate and affects the work efficiency of medical staff. .

Utility model content

In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a pressure ulcer prevention indwelling needle, which effectively solves the problem that the patient's long-term use of the indwelling needle is easy to cause pressure ulcers on the patient's skin and the medical staff is inconvenient to operate The problem.

In order to achieve the above purpose, the present invention provides the following technical solutions: the present invention comprises a casing and a steel needle, the casing is a cavity structure, the steel needle can be slid up and down in the cavity of the casing, and the casing The body is provided with a front and rear sleeve, the sleeve is provided with a piston block that can slide in the sleeve, a first tension spring is connected between the rear end of the piston block and the sleeve, and the rear end of the piston block has a limited fixed connection A position pin, a circular block is sleeved on the outside of the steel needle, the circular block is provided with a limit hole that can cooperate with the limit pin, and the limit pin cooperates with the limit hole on the circular block to form a limit structure;

The outside of the sleeve is provided with an airbag, the sleeve is placed in the airbag, the airbag is provided with a one-way valve, and the inside of the airbag is provided with a first spring. The negative pressure cooperates with the piston block to form a structure in which the piston block slides forward.

Preferably, the housing is provided with an isolation plug, and a circular stopper is arranged above the isolation plug, and the stopper is clamped on the inner wall of the housing.

Preferably, the upper end of the inside of the housing is provided with a square chute, the square chute is provided with a square block that can slide up and down in the square chute, and a second pulley is connected between the upper end of the square block and the inner wall of the housing reed;

The upper end of the steel needle penetrates the isolation plug and the stopper, the upper end of the steel needle is fixedly connected with the lower end of the square block, and the second tension spring cooperates with the square block to form a structure in which the steel needle slides up automatically.

Preferably, the square block is provided with a guide groove in the left and right directions, the guide groove is provided with a pin rod that can slide in the guide groove, and a second spring is connected between the left end of the pin rod and the guide groove;

The inner wall of the square chute is provided with a groove that can cooperate with the pin rod, and the pin rod and the groove cooperate to form a limit structure.

Preferably, the lower end of the housing is fixedly connected with a catheter, the lower end of the steel needle penetrates the housing and the catheter, the lower end of the steel needle is placed outside the catheter, and the steel needle cooperates with the catheter to form a puncture-proof structure.

Preferably, a needle handle is provided on the outside of the housing.

The utility model has the advantages of novel structure, ingenious conception, simple and convenient operation, and effectively solves the problems that the patient's skin is easily caused by pressure sores and the medical staff is inconvenient to use the indwelling needle for a long time through the design, improves the comfort of the patient, reduces the Rejection of patients, and improve the efficiency of medical staff.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and are used to explain the present invention together with the embodiments of the present invention, and do not constitute a limitation to the present invention. In the attached image:

Figure 1 is a schematic diagram of the overall cutaway structure of the utility model.

Figure 2 is a schematic diagram of the overall structure of the utility model.

FIG. 3 is a schematic diagram of the matching structure of the airbag and the casing of the present invention.

FIG. 4 is a schematic diagram of the matching structure of the sleeve and the piston block of the present invention.

FIG. 5 is a schematic diagram of the matching structure of the square block and the square chute of the present invention.

Detailed ways

The specific embodiments of the present utility model will be further described in detail below with reference to the accompanying drawings 1-5.

Embodiment 1, as shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the utility model includes a casing 1 and a steel needle 5, the casing 1 is a cavity structure, and the steel needle 5 can be placed in the casing slidably up and down. In the cavity of 1, in order to limit the position of the steel needle 5 when the medical staff is puncturing the patient, the casing 1 is provided with a sleeve 12 in the front and rear directions, and the sleeve 12 is provided with a sleeve 12 that can be inserted into the sleeve. 12 The piston block 13 sliding inside, the first tension spring 14 is connected between the rear end of the piston block 13 and the sleeve 12, the rear end of the piston block 13 is fixedly connected with the limit pin 17, and the outer sleeve of the steel needle 5 is provided with The circular block 11, the circular block 11 is provided with a limit hole that can cooperate with the limit pin 17, the limit pin 17 cooperates with the limit hole on the circular block 11 to form a limit structure, and the first tension spring 14 is used to form a limit structure. The pulling force makes the limit pin 17 downwardly cooperate with the limit hole on the circular block 11 to ensure that the steel needle 5 will not slide when the medical staff is puncturing the patient;

The housing 1 of the indwelling needle is relatively hard, and prolonged use will cause pressure sores on the patient's skin, especially for children, whose skin is more sensitive and more likely to cause damage to the skin after prolonged use. Emotions are not easy to control, and it is easy to cause children's resistance. The outer part of the sleeve 12 is provided with an airbag 2, and the airbag 2 has a certain elasticity, which can alleviate the pain of the patient and avoid causing damage to the patient's skin. The sleeve 12 is placed in the airbag 2 Inside, the air bag 2 is provided with a one-way valve. The one-way valve is in the prior art, which is not described here. The air bag 2 is provided with a first spring 3. Facing the patient's skin, press the airbag 2 after puncturing the patient, the gas inside the airbag 2 is discharged through the one-way valve, and then let go. , the negative pressure in the air bag 2 cooperates with the piston block 13 to form a structure in which the piston block 13 slides forward, and the piston block 13 slides forward to drive the limit pin 17 to slide away from the limit hole in the circular block 11, thereby releasing the steel needle. 5, at this time, the housing 1 can be slightly rotated so that the air bag 2 is facing the patient's skin and the indwelling needle is fixed with tape.

Embodiment 2, on the basis of Embodiment 1, shown in FIGS. 1 and 5 , in order to achieve a better effect, the casing 1 is provided with an isolation plug 10 , and the isolation plug 10 is formed with the lower end of the casing 1 . In the infusion cavity, the medicinal liquid enters the catheter 4 through the infusion cavity, and enters the patient's body through the catheter 4. In order to prevent the isolation plug 10 from sliding up under the drive of the steel needle 5, a circular stopper 9 is provided above the isolation plug 10 to prevent the isolation plug 10 from sliding upwards. The block 9 is clamped on the inner wall of the housing 1 .

Embodiment 3, on the basis of Embodiment 2, as shown in Figure 1, Figure 4 and Figure 5, in order to realize the automatic upward sliding of the steel needle 5, the upper end inside the casing 1 is provided with a square chute, and the square chute is There is a square block 8 that can slide up and down in the square chute. A second tension spring 7 is connected between the upper end of the square block 8 and the inner wall of the housing 1, and the second tension spring 7 cooperates with the square block 8 to form an upward sliding Structure;

The upper end of the steel needle 5 penetrates the isolation plug 10 and the stopper 9, and the upper end of the steel needle 5 is fixedly connected with the lower end of the square block 8. The second tension spring 7 pulls the square block 8 to make the steel needle 5 slide up, and the second tension spring 7 cooperates with the square block 8 to form a structure in which the steel needle 5 slides up automatically.

Embodiment 4, on the basis of Embodiment 3, as shown in FIG. 5 , in order to realize the limit of the upward sliding of the steel needle 5, the square block 8 is provided with a guide groove in the left and right directions, and the guide groove is provided with a guide groove. A pin rod 16 that can slide in the guide groove, a second spring 15 is connected between the left end of the pin rod 16 and the guide groove;

The inner wall of the square chute is provided with a groove that can be matched with the pin rod 16. When the pin rod 16 slides up to the groove with the square block 8, the pin rod 16 slides out of the guide groove under the action of the second spring 15 and enters the groove. In cooperation with the groove, the pin rod 16 cooperates with the groove to form a limit structure, so as to realize the second limit of the steel needle 5 .

Embodiment 5, on the basis of Embodiment 1, as shown in FIGS. 1 and 2 , the lower end of the housing 1 is fixedly connected with a catheter 4, and the catheter 4 has greater toughness than the steel needle 5, reducing damage to blood vessels, The lower end of the steel needle 5 penetrates the housing 1 and the catheter 4, and the lower end of the steel needle 5 is placed outside the catheter 4. After the medical staff punctures the patient, the steel needle 5 slides up, and the lower end of the steel needle 5 is wrapped by the catheter 4 at this time. , the steel needle 5 cooperates with the catheter 4 to form an anti-stab wound structure.

Embodiment 6, on the basis of Embodiment 1, is shown in FIGS. 1 and 2 , in order to facilitate the operation, a needle handle 6 is provided on the outside of the housing 1 , and medical personnel can manipulate the indwelling needle through the needle handle 6 .

When the utility model is used, the side with the air bag 2 on the indwelling needle faces the skin of the patient, and after puncturing the patient, the air bag 2 is pressed, and the gas inside the air bag 2 is discharged through the one-way valve, and then the hand is released. Under the action of the elastic force, the airbag 2 recovers and deforms to form a negative pressure inside the airbag 2. The negative pressure in the airbag 2 cooperates with the piston block 13 to form a structure in which the piston block 13 slides forward, and the piston block 13 slides forward to drive the limit pin 17 to slide away. The limit hole in the circular block 11 releases the limit on the steel needle 5. When the limit pin 17 and the limit hole on the circular block 11 are released from the limit, the second tension spring 7 pulls the square block 8 Make the steel needle 5 slide up, at this time, slightly rotate the housing 1 to make the air bag 2 face the patient's skin and fix the indwelling needle with tape.

The utility model has the advantages of novel structure, ingenious conception, simple and convenient operation, and effectively solves the problems that the patient's skin is easily caused by pressure sores and the medical staff is inconvenient to use the indwelling needle for a long time through the design, improves the comfort of the patient, reduces the Rejection of patients, and improve the efficiency of medical staff.

Finally, it should be noted that the above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. , it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (6)

1. The utility model provides a kind of pressure sore preventing indwelling needle, including casing (1) and steel needle (5), its characterized in that, casing (1) is the cavity structure, and in the cavity of casing (1) was arranged in to steel needle (5) can slide from top to bottom, be equipped with fore-and-aft direction sleeve (12) on casing (1), be equipped with piston piece (13) that can slide in sleeve (12), be connected with extension spring (14) between the rear end of piston piece (13) and sleeve (12), the rear end fixedly connected with spacer pin (17) of piston piece (13), the outside cover of steel needle (5) is equipped with circular block (11), be equipped with on circular block (11) can with spacer pin (17) complex spacing hole, spacer pin (17) and the spacing hole cooperation on circular block (11) form limit structure;

   the outside of sleeve (12) is equipped with gasbag (2), and in gasbag (2) were arranged in to sleeve (12), be equipped with the check valve on gasbag (2), the inside of gasbag (2) was equipped with spring (3), presses gasbag (2), and gasbag (2) resume deformation and make gasbag (2) inside form the negative pressure, and the negative pressure in gasbag (2) forms piston block (13) structure that slides forward with piston block (13) cooperation.
2. 2. The kinds of pressure sore preventing indwelling needle according to claim 1, wherein a separating plug (10) is arranged in the housing (1), a round stopper (9) is arranged above the separating plug (10), and the stopper (9) is clamped on the inner wall of the housing (1).
3. 3. The kinds of pressure sore preventing indwelling needle of claim 2, wherein a square chute is arranged at the upper end inside the housing (1), a square block (8) capable of sliding up and down in the square chute is arranged in the square chute, and a second tension spring (7) is connected between the upper end of the square block (8) and the inner wall of the housing (1);

   isolation stopper (10) and dog (9) are run through to the upper end of steel needle (5), the upper end of steel needle (5) and the lower extreme fixed connection of square piece (8), and second extension spring (7) and square piece (8) cooperation form the structure that steel needle (5) are automatic to be slided upward.
4. 4. The kinds of pressure sore preventing indwelling needle of claim 3, wherein a guide groove in the left-right direction is arranged in the square block (8), a pin rod (16) which can slide in the guide groove is arranged in the guide groove, and a second spring (15) is connected between the left end of the pin rod (16) and the guide groove;

   the inner wall of the square sliding groove is provided with a groove which can be matched with the pin rod (16), and the pin rod (16) is matched with the groove to form a limiting structure.
5. 5. The kinds of pressure sore preventing indwelling needle according to claim 1, wherein a catheter (4) is fixedly connected to the lower end of the housing (1), the lower end of the steel needle (5) penetrates through the housing (1) and the catheter (4), the lower end of the steel needle (5) is placed outside the catheter (4), and the steel needle (5) and the catheter (4) are matched to form a puncture-proof structure.
6. 6. The kinds of pressure sore prevention indwelling needle according to claim 1, wherein a needle handle (6) is provided outside the housing (1).

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