CN215426769U

CN215426769U - Drug delivery device for tracheal intubation guide wire

Info

Publication number: CN215426769U
Application number: CN202121634830.1U
Authority: CN
Inventors: 吴志林; 王婷婷
Original assignee: Tongji Medical College of Huazhong University of Science and Technology
Current assignee: Tongji Medical College of Huazhong University of Science and Technology
Priority date: 2021-07-16
Filing date: 2021-07-16
Publication date: 2022-01-07
Anticipated expiration: 2031-07-16

Abstract

The utility model discloses a drug delivery device for a tracheal intubation guide wire, which comprises a spray head, an output mechanism and a transfusion tube, wherein the spray head is arranged at the upper part of the output mechanism; the output mechanism comprises a shell, an injection tube, a piston, a push rod, a rotating part and a transmission part, wherein the injection tube is fixed on the shell; one end of the infusion tube is connected with the spray head, and the other end of the infusion tube is communicated with the injection cavity. The technical scheme provided by the utility model has the beneficial effects that: at the intubate in-process, at the uniform velocity rotate a piece, the driving medium will rotate the rotation conversion of piece and move for the axial of push rod, the push rod drives the piston and removes in to the injection tube, thereby make the anesthetic in the injection tube along the transfer line from the tracheal surface of shower nozzle blowout patient, because rotate at the uniform velocity and rotate, consequently can guarantee that the piston pushes at the uniform velocity in to the injection tube, thereby make the shower nozzle at the uniform velocity blowout anesthetic, so that the intubate in-process, the tracheal surface anesthetic dose distribution of patient is comparatively even, reinforcing anesthesia effect.

Description

Drug delivery device for tracheal intubation guide wire

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a drug delivery device for a guide wire of a tracheal intubation.

Background

The tracheal intubation is a common medical operation for treating general anesthesia and respiratory failure patients, and comprises the following operation steps: after the patient is calmed and/or muscle relaxant is applied, a glottis of the patient is exposed by a laryngoscope, an endotracheal tube is inserted into the trachea of the patient, then mechanical ventilation is carried out, and the endotracheal tube needs to be inserted with a guide wire for shaping so as to be beneficial to endotracheal intubation.

The tracheal intubation has strong irritation to patients, and can cause serious cardiovascular reflex, resulting in blood pressure rise, various arrhythmia, cardiovascular and cerebrovascular accidents and other serious complications. It is therefore desirable to administer larger doses of sedatives and opioids to patients, while intravenously administering local anesthetics such as lidocaine to reduce the intubation reflex.

The chinese utility model patent of application number CN201920710413.7 provides a trachea cannula seal wire, is formed with the passageway that is used for dosing along the axial in this trachea cannula seal wire to when the intubate, can spray the narcotic on patient's trachea surface and anaesthetize, can show to alleviate trachea cannula and anaesthetize the air flue reflection after waking up, reduce the cardiovascular complication of intubate and extubation.

However, in the technical scheme, the anesthetic is sprayed in a pulse shape due to the fact that the soft capsule is contracted for administration, so that the dosage distribution of the anesthetic on the surface of the trachea of the patient is extremely uneven in the intubation process, the dosage of the anesthetic on part of the trachea surface of the patient is too large, the dosage of the anesthetic on other parts is little or none, and the anesthetic effect is not ideal.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need for a drug delivery device for an endotracheal intubation guide wire, which can uniformly spray anesthetic on the surface of the trachea of a patient during endotracheal intubation so as to anesthetize the trachea of the patient, thereby significantly reducing airway reflexes after endotracheal intubation and anesthesia recovery, reducing cardiovascular complications of intubation and intubation, and increasing comfort of the patient.

In order to achieve the aim, the utility model provides a drug delivery device for a guide wire of a tracheal intubation, which comprises a spray head, an output mechanism and a transfusion tube, wherein the spray head is connected with the output mechanism;

the spray head is fixed at one end of the guide wire of the trachea cannula;

the output mechanism comprises a shell, an injection tube, a piston, a push rod, a rotating part and a transmission part, wherein the injection tube is fixed on the shell, the piston is arranged in the injection tube in a sealing and sliding mode so that an injection cavity with variable volume is formed in the injection tube, the push rod is fixedly connected with the piston, the rotating part is arranged on the shell in a rotating mode, and the transmission part is connected with the rotating part and the push rod and used for converting the rotating motion of the rotating part into the axial movement of the push rod;

one end of the infusion tube is connected with the spray head, and the other end of the infusion tube is communicated with the injection cavity.

Preferably, the rotating piece is a screw rod, and the screw rod is parallel to the push rod; the transmission part comprises a nut and a connecting rod, the nut is in threaded connection with the lead screw, one end of the connecting rod is fixedly connected with the nut, and the other end of the connecting rod is fixedly connected with the push rod.

Preferably, the output mechanism further comprises a driving member, and the driving member is connected with the screw rod and is used for driving the screw rod to rotate.

Preferably, an accommodating cavity is formed in the housing, and the driving member is located in the accommodating cavity.

Preferably, the output mechanism further comprises a bearing, an inner ring of the bearing is fixedly sleeved on the screw rod, and an outer ring of the bearing is fixedly connected with the shell.

Preferably, a rotating wheel is coaxially fixed on the screw rod.

Preferably, a fixing part is formed on the injection cylinder, and the fixing part is detachably connected with the shell.

Preferably, the output mechanism further comprises a shaft sleeve, the shaft sleeve is slidably sleeved on the push rod, and the shaft sleeve is fixedly connected with the injection cylinder.

Preferably, the drug delivery device for the tracheal intubation guide wire further comprises a fixing sleeve, one end of the fixing sleeve is fixed on the nozzle, and the other end of the fixing sleeve is sleeved at one end of the tracheal intubation guide wire.

Preferably, the administration device for the tracheal intubation guide wire further comprises a plurality of limiting rings, and each limiting ring is sleeved on the peripheries of the tracheal intubation guide wire and the infusion tube.

Compared with the prior art, the technical scheme provided by the utility model has the beneficial effects that: at the intubate in-process, at the uniform velocity rotate a piece, the driving medium will rotate the rotation conversion of piece and move for the axial of push rod, the push rod drives the piston and removes in to the injection tube, thereby make the anesthetic in the injection tube along the transfer line from the tracheal surface of shower nozzle blowout patient, because rotate at the uniform velocity and rotate, consequently can guarantee that the piston pushes at the uniform velocity in to the injection tube, thereby make the shower nozzle at the uniform velocity blowout anesthetic, so that the intubate in-process, the tracheal surface anesthetic dose distribution of patient is comparatively even, reinforcing anesthesia effect.

Drawings

FIG. 1 is a schematic structural view of one embodiment of a drug delivery device for an endotracheal tube guidewire provided in accordance with the present invention;

FIG. 2 is an enlarged view of a portion of region A of FIG. 1;

FIG. 3 is a schematic structural view of the output mechanism of FIG. 1;

FIG. 4 is a schematic perspective view of the output mechanism of FIG. 3;

in the figure: 1-spray head, 2-output mechanism, 3-transfusion tube, 4-tracheal intubation guide wire, 5-spacing ring, 11-fixing sleeve, 21-shell, 22-injection tube, 221-fixing part, 23-piston, 24-push rod, 25-rotating part, 251-rotating wheel, 26-driving part, 261-nut, 262-connecting rod, 27-driving part, 28-bearing and 29-shaft sleeve.

Detailed Description

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the utility model and together with the description, serve to explain the principles of the utility model and not to limit the scope of the utility model.

Referring to fig. 1, fig. 1 is a schematic structural view of an embodiment of a drug delivery device for an endotracheal intubation guide wire provided by the present invention, where the drug delivery device for an endotracheal intubation guide wire includes a nozzle 1, an output mechanism 2, and a liquid delivery tube 3.

Referring to fig. 1 and 2, the nozzle 1 is fixed to one end of the guide wire 4 of the endotracheal tube, and the guide wire 4 of the endotracheal tube is commercially available.

Referring to fig. 3 and 4, the output mechanism 2 includes a housing 21, an injection cylinder 22, a piston 23, a push rod 24, a rotating member 25 and a transmission member 26, the injection cylinder 22 is fixed on the housing 21, the piston 23 is sealingly and slidably disposed in the injection cylinder 22 to form an injection cavity with a variable volume in the injection cylinder 22, the push rod 24 is fixedly connected to the piston 23, the rotating member 25 is rotatably disposed on the housing 21, and the transmission member 26 is connected to both the rotating member 25 and the push rod 24 and is used for converting the rotational movement of the rotating member 25 into the axial movement of the push rod 24.

Referring to fig. 1 and 2, one end of the infusion tube 3 is connected to the nozzle 1, the other end of the infusion tube 3 is communicated with the injection cavity, and the infusion tube 3 is commercially available.

When using, fix shower nozzle 1 at the front end of trachea cannula seal wire 4 earlier, stretch into trachea cannula seal wire 4 again, then insert the trachea cannula in patient's air flue gradually, in the intubate in-process, at the uniform velocity rotate and rotate a piece 25, driving medium 26 changes the rotation of rotating a piece 25 for the axial displacement of push rod 24, push rod 24 drives piston 23 and removes to injection tube 22 (the anesthetic is packed into in advance in injection tube 22), thereby make the anesthetic in injection tube 22 spout from shower nozzle 1 to patient tracheal surface along transfer line 3, because rotate a piece 25 and be the uniform velocity rotation, consequently can guarantee piston 23 and push in to injection tube 22 at the uniform velocity, thereby make shower nozzle 1 spout the anesthetic at the uniform velocity, so that in the intubate in-process, patient tracheal surface anesthetic dose distribution is comparatively even, reinforcing anesthetic effect.

To embody the function of the transmission member 26, referring to fig. 3 and 4, in a preferred embodiment, the rotation member 25 is a screw rod, and the screw rod is parallel to the push rod 24; the transmission member 26 comprises a nut 261 and a connecting rod 262, the nut 261 is connected to the screw rod in a threaded manner, one end of the connecting rod 262 is fixedly connected with the nut 261, and the other end of the connecting rod 262 is fixedly connected with the push rod 24.

In order to facilitate the rotation of the screw rod, referring to fig. 3 and 4, in a preferred embodiment, the output mechanism 2 further includes a driving member 27, and the driving member 27 is connected to the screw rod and is used for driving the screw rod to rotate.

To protect the driving member 27, referring to fig. 3 and 4, in a preferred embodiment, an accommodating cavity is formed in the housing 21, and the driving member 27 is located in the accommodating cavity, in this embodiment, the driving member 27 is a motor.

In order to realize the rotating connection between the screw rod and the housing 21, referring to fig. 3 and 4, in a preferred embodiment, the output mechanism 2 further includes a bearing 28, an inner ring of the bearing 28 is fixedly sleeved on the screw rod, and an outer ring of the bearing 28 is fixedly connected with the housing 21.

In order to facilitate manual rotation of the screw when required, referring to fig. 3 and 4, in a preferred embodiment, a rotation wheel 251 is coaxially fixed to the screw, so that in actual use, the screw can be directly rotated by hand, and therefore, the driving member 27 is not provided in a low-profile version of the device, so as to reduce the cost of the device.

In order to realize the fixed connection between the syringe 22 and the housing 21, referring to fig. 3 and 4, in a preferred embodiment, a fixing portion 221 is formed on the syringe 22, and the fixing portion 221 is detachably connected to the housing 21.

In order to improve the stability of the piston 23 during moving, referring to fig. 3 and 4, in a preferred embodiment, the output mechanism 2 further includes a shaft sleeve 29, the shaft sleeve 29 is slidably sleeved on the push rod 24, the shaft sleeve 29 is fixedly connected with the syringe 22, and the push rod 24 is limited by the shaft sleeve 29 during moving, so that the push rod 24 is ensured not to be deviated, and the stability of the piston 23 during moving is improved.

In order to realize the fixed connection between the nozzle 1 and the guide wire 4 of the endotracheal intubation, referring to fig. 1 and 2, in a preferred embodiment, the drug delivery device for the guide wire of the endotracheal intubation further includes a fixing sleeve 11, one end of the fixing sleeve 11 is fixed on the nozzle 1, and the other end of the fixing sleeve 11 is sleeved on one end of the guide wire 4 of the endotracheal intubation. In this embodiment, the fixing sleeve 11 is a rubber sleeve, and the inner diameter of the fixing sleeve 11 is larger than the diameter of the guide wire 4 of the tracheal intubation, so that after the fixing sleeve 11 is sleeved on the guide wire 4 of the tracheal intubation, the fixing sleeve 11 and the guide wire 4 of the tracheal intubation can be fixedly connected.

In order to fix the infusion tube 3 and the endotracheal intubation guide wire 4, referring to fig. 1 and 2, in a preferred embodiment, the administration device for the endotracheal intubation guide wire further includes a plurality of limiting rings 5, and each of the limiting rings 5 is sleeved on the peripheries of the endotracheal intubation guide wire 4 and the infusion tube 3. So that the infusion tube 3 and the guide wire 4 of the tracheal cannula can be fixed together.

For a better understanding of the present invention, the following will describe in detail the operation of the drug delivery device for endotracheal intubation guide wire according to the present invention with reference to fig. 1 to 4: when using, fix the front end at trachea cannula seal wire 4 with shower nozzle 1 earlier, stretch into trachea cannula seal wire 4 again in the trachea cannula, insert the trachea cannula in patient's air flue gradually after that, in the intubate in-process, at the uniform velocity rotation lead screw through driving piece 27, when the lead screw rotates, nut 261 moves along the lead screw, thereby it moves to drive push rod 24, push rod 24 drives piston 23 and removes to injection tube 22 (the anesthetic is packed into in advance in injection tube 22), thereby make the anesthetic in injection tube 22 spout the tracheal surface of patient from shower nozzle 1 along transfer line 3, because it rotates at the uniform velocity to rotate piece 25, consequently can guarantee that piston 23 pushes at the uniform velocity in to injection tube 22, thereby make 1 at the uniform velocity blowout anesthetic of shower nozzle, so that in the intubate in-process, the tracheal surface anesthetic dose distribution of patient is comparatively even, reinforcing anesthesia effect.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.

Claims

1. A drug delivery device for a tracheal intubation guide wire is characterized by comprising a spray head, an output mechanism and a transfusion tube;

the spray head is fixed at one end of the guide wire of the trachea cannula;

2. The device according to claim 1, wherein the rotating member is a lead screw, and the lead screw is parallel to the push rod;

the transmission part comprises a nut and a connecting rod, the nut is in threaded connection with the lead screw, one end of the connecting rod is fixedly connected with the nut, and the other end of the connecting rod is fixedly connected with the push rod.

3. The device of claim 2, wherein the output mechanism further comprises a driving member coupled to the lead screw for driving the lead screw to rotate.

4. A delivery device according to claim 3, wherein a receiving chamber is formed in the housing, the actuating member being located within the receiving chamber.

5. The administration device for the guide wire of the tracheal intubation according to claim 2, wherein the output mechanism further comprises a bearing, an inner ring of the bearing is fixedly sleeved on the screw rod, and an outer ring of the bearing is fixedly connected with the housing.

6. The device of claim 2, wherein a rotation wheel is coaxially fixed to the screw.

7. The device of claim 1, wherein the barrel defines a securing portion that is removably coupled to the housing.

8. The device of claim 1, wherein the delivery mechanism further comprises a hub slidably disposed on the push rod, the hub being fixedly coupled to the barrel.

9. The device of claim 1, further comprising a sheath, wherein one end of the sheath is fixed to the nozzle and the other end of the sheath is disposed over one end of the endotracheal tube guide wire.

10. The administration device for the guide wire of the tracheal intubation according to claim 1, further comprising a plurality of limiting rings, wherein each limiting ring is sleeved on the periphery of the guide wire of the tracheal intubation and the infusion tube.