RU194228U1 - DEVICE FOR INJECTIONS AND PUNCTIONS UNDER ultrasound CONTROL - Google Patents

Abstract

The inventive device relates to medicine, in particular to abdominal surgery and can be used to puncture paratransplant formations that occur after operations for postoperative ventral hernias of various origins using synthetic grafts, differential biopsies, as well as for injection of drugs or grafts. The device is a housing 1 of two halves that mirror each other, fastened together with six screws 2, in the upper part of which there is a bed 3 for the cylinder (a) of the puncture cartridge or syringe, and a groove 4 for the ears (b) (finger rest) cylinder (a) of a puncture cartridge or syringe. The front part of the housing 1 has an exit 5 for the needle needle cone (c) with a needle (g), an external thread 6 with a graduated ruler, onto which an adjustable nut 7 is screwed with a through hole 8, through which the needle (g) of the puncture cartridge can be put on or removed or syringe. Inside the housing 1, a trigger is installed, consisting of a spring 9 of the trigger 10, whispered 11 with a kink 12; the upper part of the sear 11 comes in and rests on the teeth of the gear 19 or the guide rail 17 of the rack-arm 13, and the lower part of the sear 11 is connected to the axis 15, on which the lever 16 is mounted, mounted on the outer part of the trigger 10. The sear 11 is made with the possibility left, right along the axis 15 of the switch lever 16, which adjusts its position, there is also a return mechanism (not shown in Fig. 12) at the break point 12 of the sear 11, which allows the upper part of the sear 11 to move upward and downward (similar a dog in the ratchet mechanism). An external groove 14 is located at the rear of the lever-arm 13 for abutment (e) of the piston rod (e) of the puncture cartridge or syringe. From the bottom, the rack-link 13 has two guides, while one guide 17 has oblique teeth, and the second guide 18 has modular teeth. Under the rack-lever 13, on one axis, there are two gears fastened together; one of the gears 19 has oblique teeth and is located between two guides 17, 18 of the rack-arm 13, and the second gear 20 has modular teeth and is located under the guide 18 with modular teeth. The lever switch 16 controls the position of the sear 11, moving it to the guide rail 17 of the rack-lever 13 or gear 19 with bevel teeth, which determines the direction of movement of the rack-lever 13 forward or backward, and allows not only to fence, but also to inject material (for example , drugs or implants). 7 ill.

Description

The inventive device relates to medicine, in particular to abdominal surgery and can be used to puncture paratransplant formations that occur after operations for postoperative ventral hernias of various origins using synthetic grafts, differential biopsies, as well as for injection of drugs or grafts.

A reusable medical device is known that has a needle for injecting or collecting liquid, which is drawn in by pressing a piston slidably mounted in a medical device. The front retraction mechanism has a needle holder connected to the needle. The needle holder is supported along the axis of the device by means of a friction clutch holding ring element connected to the needle holder along an axially aligned sliding interface. (WO9508358, IPC A61M5 / 00; A61M5 / 31; A61M5 / 32; A61M5 / 50, 1995-03-30).

However, this device has significant drawbacks in that the puncture makes it difficult to accurately position the needle and trauma to the cavity with damage to the polypropylene graft is not excluded. Also, taking a puncture is possible only with the participation of both hands of the doctor, which makes it difficult to ultrasound control of the syringe needle.

The closest analogue is a device for puncture of paratransplant formations under ultrasound control, which is a case of two halves, fastened together with six screws, forming a bed for the cylinder of the puncture cartridge, inside the case of which there is a trigger mechanism consisting of a trigger with a guide pin and a spring, to which the locking lever with a spring is movably fastened, going over the teeth of the gear rack-lever with a slot for attaching the removable piston handle of the puncture cartridge. A puncture cartridge with a needle is mounted in the upper part of the device so that the cylinder ears are mounted in the groove, and a removable piston handle in the groove of the toothed rack-lever (RU 47745, IPC A61M 5/00, published on 09/10/2005).

The disadvantage of the closest analogue is that the device allows you to perform only one operation, namely the sampling of material. In addition, the device does not allow to limit the depth of entry of the needle, which is an important factor in the puncture of paratransplant formations.

The objective of the utility model is to provide a more accurate and safe atraumatic selection of punctured material, in addition to the ability to supply material, that is, to inject drugs or implants.

The problem is solved thanks to the constructive improvement of the closest analogue, which allows for more accurate and safe atraumatic selection of punctured material and the ability to supply material, that is, to inject drugs or implants.

The essence of the device is the possibility of more accurate and safe atraumatic selection of punctured material (seroma, hematoma), thanks to the front of the case equipped with an external thread with divisions of a gauge, onto which an adjustable nut 6 is wound, in addition to ensuring the possibility of both intake and supply of material, that is, to inject drugs, thanks to the switch lever that regulates the position of the moving sear, moving it to the teeth of the rack-lever or gear, which Allows you to adjust the direction of movement of the gear rack-lever forward or backward, therefore, to produce not only a fence, but also the supply of material.

In FIG. 1 shows a General view of the inventive device in operating position.

In FIG. 2 shows a diagram of the inventive device without a puncture cartridge or syringe.

In FIG. 3 shows the inventive device in section (without nut).

In FIG. 4 shows gears (front and side views).

In FIG. 5 shows the sear and the shift lever (top view).

In FIG. 6 shows the lever-arm in three projections (left, right, rear)

In FIG. 7 shows an embodiment of a device with a flexible hose.

The device is a housing 1 of two halves that mirror each other, fastened together with six screws 2, in the upper part of which there is a bed 3 for the cylinder (a) of the puncture cartridge or syringe, and a groove 4 for the ears (b) (finger rest) of the cylinder (a) a puncture cartridge or syringe. The front of the housing 1 has an outlet 5 for the needle cone (c) with a needle (g), an external thread 6 with a graduated ruler, onto which an adjustable nut 7 is screwed with a through hole 8 through which you can put on or remove the needle (g) of the puncture cartridge or syringe.

Inside the housing 1, a trigger is installed, consisting of a spring 9 of the trigger 10, whispered 11 with a kink 12; the upper part of the sear 11 comes in and rests on the teeth of the gear 19 or the guide rail 17 of the rack-arm 13, and the lower part of the sear 11 is connected to the axis 15, on which the switch lever 16 is mounted, mounted on the outer part of the trigger 10. The sear 11 is made with the possibility left, right along the axis 15 of the switch lever 16 which adjusts its position (Fig. 5), also, at the location of the break 12 of the sear 11, there is a return mechanism (not shown in Fig.) allowing the upper part of the sear 11 to move upward and sinking down (en logical pawl in the ratchet mechanism).

An external groove 14 is located at the rear of the lever-arm 13 for abutment (e) of the piston rod (e) of the puncture cartridge or syringe. From the bottom, the rack-link 13 has two guides, while one guide 17 has oblique teeth, and the second guide 18 has modular teeth (Fig. 6). Under the rack-lever 13, on one axis, there are two gears fastened together; one of the gears 19 has oblique teeth and is located between two guides 17,18 of the rack-arm 13, and the second gear 20 has modular teeth and is located under the guide 18 with modular teeth (Fig. 4).

The switch lever 16 controls the position of the sear 11, moving it to the guide rail 17 of the rack-lever 13 or gear 19 with bevel teeth, which determines the direction of movement of the rack-lever 13 forward or backward, and allows not only the fence, but also the injection of material (for example , drugs or implants).

Principle of operation.

In the box 3 is placed the cylinder (a) of the puncture cartridge or syringe, while the “ears” (b) of the cylinder (a) are threaded into the groove 4, and the stop (e) of the rod (e) is threaded into the groove 14 of the toothed rack-arm 13. B depending on the predetermined depth of penetration of the needle (g), for injection or material intake, the nut 7 is set to the required length, which is determined by the distance from the tip of the needle (g) to the front edge of the nut 7. After pre-treatment with the antiseptic solution, the area of the intended puncture or injection, needle (g) under the control of an ultrasound probe in lead into the cavity, until the front edge of the nut 7 rests in the patient’s body.

For the collection of material, it is necessary that the upper part of the sear 11 is installed with an emphasis on the guide 17 of the rack-arm 13 with oblique teeth. When you press the trigger 10 with your finger, he carries away the sear 11, which in turn takes back the staff-rail 13, taking the material.

For injection (for example, a drug or implants), it is necessary to rearrange the sear 11 using the switch lever 16, so that the upper part of the sear 11 is mounted with an emphasis on the gear 19 with the oblique teeth. When you press the trigger 10 with your finger, he carries away the sear 11, which drives the gears, while gear 20 with modular teeth moves the rack-arm 13 forward, injecting the material. If a remote injection is necessary, for the convenience of administering the drug, a flexible tube (Fig. 7) can be put on the needle cone (c), on the second end of which a horse (g) with a needle (g) is worn.

This ensures the collection of material or injection of medication with one hand, while the second is occupied by an ultrasound probe, which improves control of the needle. An adjustable nut allows you to measure up to a millimeter the length of the needle necessary for accurate penetration to the required depth. The presence of two guide rails-levers, two gears and a movable sear, allow the rack-levers to move forward and backward, thereby not only taking material, but also injecting drugs.

Thus, the task set for the author is completed.

Claims (1)

The device for injection and puncture under ultrasound control, consisting of a housing 1 of two halves that mirror each other, fastened together with screws 2, in the upper part of which there is a bed 3 for the cylinder of the puncture cartridge or syringe, and groove 4, the front of the housing 1 has an exit 5 of a needle cone with a needle, in addition, the device has a gear rack-lever 13 with a groove 14 and a guide 17 with bevel teeth, a trigger mechanism consisting of a spring 9, a trigger 10, characterized in that it is located on the front of the case the threaded thread 6, on which the adjustable nut 7 is screwed, the rack-arm 13 has a second guide 18 with modular teeth, in addition, under the rack-arm 13, on the same axis, there are two gears attached to each other, one of the gear 19 has bevel the teeth and is located between the two guides 17, 18 of the rack-arm 13, and the second gear 20 has modular teeth and is located under the guide 18 with modular teeth, and a sear 11 with a kink 12 is fixed inside the housing, while the upper part of the sear rests on the gear teeth 19 or rail 17 reiki- the lever 13, and the lower part of the sear 11 is connected to the axis 15, on which the switch lever 16 is fixed, which regulates the position of the sear 11, which is movable to the left, right along the axis 15 of the switch lever 16, also in the place of the fracture 12 of the sear 11 the movement mechanism of the upper part of the whispered 11 up and down.

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