CN107929868B - Push device for tube sealing liquid injector - Google Patents

Abstract

The invention provides a pushing device of a tube sealing liquid injector, which comprises: a bed body and a sliding block; the bed body comprises a first guide groove; the first end of the bed body extends upwards to form a baffle wall, and a through hole is formed in the baffle wall and is used for penetrating through a nipple of the injector; a rack is also formed on the upper side of the bed body, and is parallel to the first guide groove; the sliding block comprises a first supporting wall, a first protruding block is formed at the lower end of the first supporting wall, the first protruding block is slidably clamped in the first guide groove and cannot be separated from the upper opening of the first groove; a shaft is formed through the upper end of the first supporting wall; the shaft is fixedly provided with a gear and a brake wheel, and the gear and the brake wheel are respectively positioned at two sides of the first supporting wall; the gear is meshed with the rack; the actuating wheel is used for pushing the pushing hand of the injector through the curved surface of the actuating wheel; the actuating wheel is a cam or an eccentric wheel. By pushing the sliding block at a constant speed, the curved surface of the driving wheel outputs periodically changed pushing force, so that the impulse type output of the tube sealing liquid is realized.

Description

Locking solution syringe push device

technical field

The invention relates to a medical device, in particular to a tube locking solution syringe pushing device for pushing tube locking solution.

Background technique

For indwelling needles or PICCs, it is necessary to flush the drug solution in the indwelling needle or PICC into the patient's body with a lock solution after infusion, otherwise the blood or drug solution will easily accumulate in the indwelling needle or PICC pipeline, blocking the indwelling needle or PICC. In order to be able to rinse thoroughly, the nurse is required to advance the syringe in pulses during the locking operation in practice. However, such operation requirements will be more difficult for nurses, especially for inexperienced nurses, it is difficult to master the technique of pushing the syringe, and it may not be able to meet the sealing tube requirements.

Contents of the invention

In view of the above problems, the present invention aims to propose a pushing device for operating a syringe filled with lock solution. With this device, the user only needs to push the syringe at a constant speed as in normal operation of the syringe to achieve the lock solution pulse type. The effect of being pushed out of a syringe.

The pushing device for the lock fluid injector of the present invention comprises: a bed body and a slider;

The bed body is formed into a long shape, and a first guide groove is formed on the upper side of the bed body along its length direction; the first end of the bed body extends upward to form a baffle wall, and a through hole is formed in the baffle wall, and the through hole is used to pass through The nipple of the syringe; a rack is also formed on the upper side of the bed, and the rack is parallel to the first guide groove;

The slider includes a first support wall, a first protrusion is formed at the lower end of the first support wall, the first protrusion is slidably locked in the first guide groove, and cannot escape from the upper opening of the first groove; A shaft is formed through the upper end of the first support wall; a gear and a brake wheel are fixedly installed on the shaft, and the gear and the brake wheel are respectively located on both sides of the first support wall; the gear is engaged on the rack; the actuation wheel is used to pass its curved surface to push the push handle of the syringe;

The actuating wheel is a cam or an eccentric wheel.

Preferably, a handle is further formed on the underside of the bed body.

Preferably, the bed further includes a second guide groove;

The slider further includes a second support wall;

The protrusion at the lower end of the second supporting wall is held in the second guide groove and cannot escape from the upper opening of the second groove;

The shaft is further inserted into the upper end of the second supporting wall.

Preferably, the gear is located on a first side of the first support wall and the actuation wheel is located on a second side of the first support wall and the second support wall.

Preferably, the gear is located on a first side of the first support wall, the actuation wheel is located on a second side of the first support wall and it is located between the first support wall and the second support wall.

Preferably, the first support wall and the second support wall are fixedly connected together.

Preferably, the first support wall and the second support wall are fixedly connected together through a handle.

Preferably, the cross section of the first groove is an isosceles trapezoid with a narrow top and a wide bottom.

Preferably, the injection passes through said through hole, with the outwardly protruding edge of the barrel of the syringe abutting against the inner side of the blocking wall.

Preferably, rollers or balls are arranged on the end surface of the push handle of the syringe.

Through the pushing device of the present invention, when pushing the lock liquid, it only needs to be pushed at a constant speed like pushing ordinary liquids, and the gear rotating at a constant speed drives the cam or eccentric wheel connected with it to rotate, and the rotation of the cam or eccentric wheel will cause the syringe to The pusher applies periodic pulse push to achieve the effect of pulse seal.

Description of drawings

Fig. 1 is the front view of the locking fluid syringe pushing device of the present invention after the syringe is loaded;

Fig. 2 is the rear view of the locking fluid syringe pushing device of the present invention after the syringe is loaded;

Fig. 3 is a front structural schematic diagram of the lock solution syringe pushing device of the present invention;

Fig. 4 is a top view structural schematic diagram of the lock solution syringe pushing device of the present invention;

Fig. 5 is a side view structural schematic diagram of the lock solution syringe pushing device of the present invention;

Fig. 6 is a schematic side view of the bed body of the locking fluid syringe pushing device of the present invention;

7 is a schematic top view of the bed body of the lock solution syringe pushing device of the present invention;

Fig. 8 is a schematic diagram of the structure on the right side of the bed body of the locking fluid syringe pushing device of the present invention;

Fig. 9 is a schematic view of the structure on the left side of the bed of the locking fluid syringe pushing device of the present invention;

Fig. 10 is a schematic diagram of the structure on the right side of the slider of the lock solution syringe pushing device of the present invention;

Fig. 11 is a schematic front view of the slider of the lock solution syringe pushing device of the present invention;

Fig. 12 is a schematic bottom view of the slider of the locking fluid syringe pushing device of the present invention;

Fig. 13 is an embodiment of a lock solution syringe with rollers or balls arranged on the end surface of the push handle.

Detailed ways

Next, with reference to the accompanying drawings, the lock solution syringe pushing device of the present invention will be described in detail.

In the present invention, the pulse type means that it changes from time to time, and has certain changes. Pulse flushing refers to the pipeline that flushes the PICC or indwelling needle alternately with the amount of flushing fluid.

The principle of the present invention is to push the push handle of the syringe through a cam or eccentric wheel rotating at a uniform speed, so that the push implemented on the syringe is a periodically changing pulse push.

The pushing device of the present invention includes a bed body 10 and a slider 30. The lock solution injector 20 is placed on the bed body 10, and the slider 30 is used to push the push handle of the lock solution injector 20, as shown in FIGS. 1 and 2 .

The bed body 10 includes guide grooves 14a, 14b; here there can be at least one guide groove, and two are shown in the drawings. When there are two guide grooves, the slide block 30 slides more smoothly. Of course, in the case of two or more guide grooves, each guide groove is parallel.

The upper side of the bed body 10 also includes a rack 13 parallel to the guide groove. The first end of the bed body also includes a blocking wall 12 on which a through hole 15 is formed. The through hole 15 can only allow the nipple of the lock solution syringe 20 to pass through, or it can be opened larger to allow the barrel of the lock solution syringe to pass through, and the outwardly protruding edge of the barrel rests against the blocking wall 12 inside, as shown in Figures 1 and 2.

The lower side of the bed body 10 may also include a handle to facilitate holding the bed body 10 .

The slider 30 is mainly composed of support walls 31 a, 31 b, a gear 35 , and an actuating wheel 34 . The actuating wheel 34 can be a cam or an eccentric wheel, and the figure shows an elliptical cam, but the embodiment of the actuating wheel of the present invention is not limited thereto.

The number of supporting walls corresponds to the number of guide grooves. A protrusion 33 is formed at the lower end of the support wall, and the cross section of the protrusion 33 corresponds to the cross section of the guide grooves 14a, 14b. In the accompanying drawings, the cross-section of the bump is an isosceles trapezoid with a narrow top and a wide bottom, and other embodiments are also possible, such as circular segment, rectangle, pentagon, etc., as long as the bump can slide when inserted into the guide groove and cannot It can be disengaged from the upper opening of the self-guiding groove.

In the case of multiple support walls, the multiple support walls can be fixed together, for example, by the handle 32 shown in the drawings, so as to facilitate the coordinated movement of the multiple support walls in the multiple guide slots.

The upper end of the supporting wall is rotatably provided with a shaft on which a gear 35 and an actuating wheel 34 are fixedly connected. In the case of a supporting wall, it may be that the gear 35 is located on one side of the supporting wall and the actuating wheel 34 is located on the other side.

In the case of two supporting walls, the gear 35 and the actuating wheel 34 may be respectively located on both sides of the two supporting walls. It can also be as shown in Figure 4, so that the actuating wheel 34 is located between the two supporting walls 31a, 31b, so that both sides of the actuating wheel are protected by the supporting walls, which can prevent the actuating wheel from accidentally rubbing against other objects, such as infusion tubes , clothing, bed linen, etc.

In order to reduce the friction between the end surface of the push handle of the locking fluid syringe and the curved surface of the brake wheel 34, the surface of the brake wheel can be designed to be smooth and the contact surface with the end surface of the push handle is small. Alternatively, rollers or balls can be designed on the end face of the push handle, and there can be multiple rollers or balls to ensure that different positions of the curved surface can be in contact with the rollers or balls when they are in contact with the push handle, so that the friction is converted into rolling friction, thereby There is very little friction.

When in use, clamp the locking solution syringe between the retaining wall and the actuating wheel, and push the slider at a constant speed, and the curved surface of the actuating wheel outputs a periodically changing driving force, so that the locking solution is also output in pulses from the syringe .

Claims (8)

1. A lock fluid syringe pushing device, characterized in that it comprises: a bed body and a slide block; The bed body is formed into a long shape, and a first guide groove is formed on the upper side of the bed body along its length direction; the first end of the bed body extends upward to form a baffle wall, and a through hole is formed in the baffle wall, and the through hole is used to pass through The nipple of the syringe; a rack is also formed on the upper side of the bed, and the rack is parallel to the first guide groove; The slider includes a first support wall, a first protrusion is formed at the lower end of the first support wall, the first protrusion is slidably locked in the first guide groove, and cannot escape from the upper opening of the first groove; A shaft is formed through the upper end of the first support wall; a gear and a brake wheel are fixedly installed on the shaft, and the gear and the brake wheel are respectively located on both sides of the first support wall; the gear is engaged on the rack; the actuation wheel is used to pass its curved surface to push the push handle of the syringe; The actuating wheel is a cam or an eccentric wheel; A handle is further formed on the underside of the bed body; The bed further includes a second channel; The slider further includes a second support wall; The protrusion at the lower end of the second supporting wall is held in the second guide groove and cannot escape from the upper opening of the second groove; The shaft is further inserted into the upper end of the second supporting wall. 2. The locking fluid syringe pushing device according to claim 1, characterized in that: The gear is located on a first side of the first support wall and the actuation wheel is located on second sides of the first support wall and the second support wall. 3. The locking fluid syringe pushing device according to claim 1, characterized in that: The gear is located on a first side of the first support wall, the actuation wheel is located on a second side of the first support wall and it is located between the first support wall and the second support wall. 4. The locking fluid syringe pushing device according to claim 1, characterized in that: The first support wall and the second support wall are fixedly connected together. 5. The locking fluid syringe pushing device according to claim 4, characterized in that: The first support wall and the second support wall are fixedly connected together by a handle. 6. The locking fluid syringe pushing device according to claim 1, characterized in that: The cross section of the first groove is an isosceles trapezoid with a narrow top and a wide bottom. 7. The locking fluid syringe pushing device according to claim 1, characterized in that: Injecting through the through hole, the outwardly protruding edge of the barrel of the syringe abuts against the inside of the barrier wall. 8. The locking fluid syringe pushing device according to claim 1, characterized in that: Rollers or balls are arranged on the end surface of the push handle of the syringe.

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