CN211460140U - Adjustable anesthetic laryngoscope blade - Google Patents

Abstract

The utility model relates to the technical field of medical equipment, in particular to an adjustable anesthetic laryngoscope blade, which consists of a grab handle, a display connected at the upper end of the grab handle and a blade connected at the lower end of the grab handle, wherein the side of the grab handle close to the blade is provided with a pressing handle, and the side opposite to the pressing handle is provided with an unlocking switch; the blade consists of a camera tube and a telescopic blade; the telescopic blade is internally connected with a rack, and the rack can be driven by the pressing handle to displace under the action of the rotating wheel and the traction line, so that the telescopic blade is driven to extend. The utility model discloses compare in the video laryngoscope on the market, set up the blade structure that can stretch out and draw back to can use a blade model to replace multiple blade model in practical application, compare in the blade of rigid structure, patient's oral cavity and choke can be laminated better to the blade of concertina type, alleviate patient's uncomfortable and feel, when avoiding the laryngoscope inspection, "retching" the appearance of phenomenon.

Description

An adjustable anesthesia laryngoscope blade

technical field

The utility model relates to the technical field of medical instruments, in particular to an adjustable blade of an anesthesia laryngoscope.

Background technique

At present, when endotracheal intubation is performed under general anesthesia and emergency endotracheal intubation for critically ill patients, a laryngoscope is required to assist in inserting the trachea from the patient's mouth. Video laryngoscopes gradually replace traditional laryngoscopes in hospitals because the introduction of imaging systems enables doctors to clearly see the intubation process, reducing intubation misoperation and patients' pain.

Video laryngoscopes generally include blades, a handle, a camera and a display. The blades have the arc shape of the physiological curvature of the throat in the natural body position of the human body. Usually, different types of blades are required for different groups of people (such as newborns, children, adults). , it is easy to cause confusion between the blade and the handle during the doctor's operation, thus bringing inconvenience to the doctor's use.

Moreover, the blades of the existing video laryngoscope are rigid structures for the consideration of industrial production. Due to age differences and individual differences, the depth and width of the larynx of each patient are different. In the actual application process, for some patients, Tolerable insertion of laryngoscope blades may result in severe gag reflex (ie "retching") in another group of patients.

Therefore, there is an urgent need for an anesthesia laryngoscope blade that can adjust the structure of the larynx according to the individual differences of patients.

Utility model content

In order to achieve the above purpose, the present utility model provides an adjustable blade of anesthesia laryngoscope, which can adjust the shape of the blade according to the specific shape of the patient's throat to reduce the discomfort of the patient. The specific technical scheme is as follows:

An adjustable anesthesia laryngoscope blade is composed of a handle, a display connected to the upper end of the handle, and a blade connected to the lower end of the handle. Unlock switch; the blade is composed of a camera tube and a telescopic blade; the telescopic blade is connected with a rack, and the rack can move under the drive of the pressing handle through the action of the runner and the traction wire, thereby driving the telescopic blade to extend.

Further, the runner is rotatably connected to the inner wall of the handle through a rotating shaft, and the rotating shaft is provided with a gear and a ratchet; the gear is meshed with the rack; the ratchet is provided with a driving pawl and a stop pawl; the driving pawl is connected by a torsion spring On the driving rod, the ratchet wheel can be driven to rotate step by step under the traction of the driving rod; the stop pawl is connected with the fixing rod fixed on the inner wall of the handle through the torsion spring to prevent the ratchet wheel from turning upside down.

Further, the lower end of the driving rod is connected with the traction wire, and the upper end is connected with the tension spring providing restoring force. When the push handle is pressed, the traction wire will drive the drive rod to move vertically downward, so that the drive pawl drives the runner to rotate by an angle, so as to drive the telescopic blade to extend its length through the transmission motion of the rack; When the handle is pulled, the drive rod returns under the action of the extension spring, ready for the next rotation of the wheel.

Further, the stop end of the stop pawl is connected to an unlock switch connected to the outer wall of the handle through a torsion spring through a pulling wire. When the unlocking switch is pressed, the stop pawl fails under the pulling of the traction rope, so that the runner can be reversed, and the rack and the telescopic blade can also be retracted.

Further, the telescopic blade is composed of several telescopic sections, the former telescopic section is sleeved on the rear end of the latter telescopic section, and the inner wall of the telescopic end section at the end of the telescopic blade is connected with the end of the rack, so that the telescopic blade and the teeth are connected. The bars guarantee the mechanical integrity.

Further, the outer surface of the telescopic blade is also provided with a disposable rubber sleeve that is adapted to its shape. Prevents contamination of instruments by bacteria in the patient's mouth.

The working principle of the utility model is:

When the push handle is pressed, the traction wire will drive the drive rod to move vertically downward, so that the drive pawl drives the runner to rotate an angle, thereby driving the telescopic blade to extend its length through the transmission motion of the rack; When the handle is pressed, the drive rod returns under the action of the tension spring, ready for the next rotation of the wheel.

When the unlocking switch is pressed, the stop pawl fails under the pulling of the traction rope, so that the runner can be reversed, and the rack and the telescopic blade can also be retracted.

Compared with the existing video laryngoscope blades, the beneficial effects of the present utility model are:

Compared with the video laryngoscopes on the market, the utility model is provided with a telescopic blade structure, so that in practical application, one type of blade can be used to replace a variety of blade types. The blade can better fit the patient's mouth and throat, reduce the patient's discomfort, and avoid the phenomenon of "retching" during laryngoscopy.

Description of drawings

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

Fig. 2 is the structural representation of the blade of the present invention;

Fig. 3 is the connection schematic diagram of the runner and the rack of the present invention;

Fig. 4 is the structural representation of the runner of the present utility model;

Fig. 5 is the sectional view of the present utility model;

FIG. 6 is a schematic view of the structure of the telescopic blade of the present invention.

In the picture: 1-handle, 11-press handle, 12-unlock switch, 2-blade, 21-camera tube, 211-camera, 22-expandable blade, 221-expandable section, 2211-limiting structure, 222-expansion End section, 23-rack, 24-wheel, 241-shaft, 242-gear, 243-ratchet, 2431-drive pawl, 24311-drive rod, 2432-stop pawl, 24321-fixed rod, 244- Torsion spring, 245-pull wire, 246-tension spring, 3-monitor.

Detailed ways

In order to further illustrate the method adopted and the effect obtained by the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings.

Example

As shown in Figure 1, Figure 2 and Figure 5, an adjustable blade of anesthesia laryngoscope is composed of a handle 1, a display 3 connected to the upper end of the handle 1, and a blade 2 connected to the lower end of the handle 1. The handle 1 The side close to the blade 2 is provided with a pressing handle 11, and the side opposite to the pressing handle 11 is provided with an unlock switch 12; the blade 2 is composed of a camera tube 21 and a telescopic blade 22; the telescopic blade 22 is internally connected with a rack 23, the rack Through the action of the runner 24 and the traction wire 245, the 23 can be displaced under the driving of the pressing handle 11, thereby driving the telescopic blade 22 to extend.

As shown in FIGS. 3 and 4 , the wheel 24 is rotatably connected to the inner wall of the handle 1 through a shaft 241 . The shaft 241 is provided with a gear 242 and a ratchet 243 spaced apart; the gear 242 meshes with the rack 23 ; the ratchet 243 is provided with a drive The pawl 2431 and the stop pawl 2432; the driving pawl 2431 is connected to the drive rod 24311 through the torsion spring 244, and can drive the ratchet 243 to rotate step by step under the traction of the driving rod 24311; the stop pawl 2432 is twisted The spring 244 is connected with the fixing rod 24321 fixed on the inner wall of the handle 1 to prevent the ratchet 243 from being reversed.

As shown in FIG. 5 , the lower end of the driving rod 24311 is connected with the pulling wire 245 , and the upper end is connected with the tension spring 246 providing restoring force. When the pressing handle 11 is pressed down, the traction wire 245 will drive the driving rod 24311 to move vertically downward, so that the driving pawl 2431 drives the runner 24 to rotate by an angle, so that the motion transmitted by the rack 23 drives the telescopic blade 22 to extend its length. ; When the pressing handle 11 is released and pressed, the driving rod 24311 will return to its original position under the action of the tension spring 246 to prepare for the next rotation of the wheel 24 .

The stop end of the stop pawl 2432 is connected to the unlock switch 12 connected to the outer wall of the handle 1 through the torsion spring 244 through the pulling wire 245 . When the unlocking switch 12 is pressed, the stopping pawl 2432 becomes invalid under the pulling of the traction rope 245, so that the runner 24 can be reversed, and the rack 23 and the telescopic blade 22 can also be retracted.

As shown in FIG. 6 , the telescopic blade 22 is composed of a plurality of telescopic sections 221 , the former telescopic section 221 is sleeved at the rear end of the latter telescopic section 221 , and the inner wall of the telescopic end section 222 at the end of the telescopic blade 22 is connected to the rack 23 The ends are connected, so that the telescopic blades and racks ensure the integrity of the mechanical structure.

The outer surface of the telescopic blade 22 is also provided with a disposable rubber sleeve (not shown in the figure) that matches its shape. Scratch, and can initially prevent the contamination of the device by the patient's oral bacteria.

Application example

The working principle of the utility model is:

S1: When the patient is undergoing tracheal intubation under general anesthesia, a disposable rubber sleeve is placed on the telescopic blade 22 of the video laryngoscope to assist in inserting the trachea.

S2: According to the age of the patient, the doctor adjusts the length of the telescopic blade 22 to suit the shape of the patient's mouth and throat: when the handle 11 is pressed, the traction wire 245 will drive the driving rod 24311 to move vertically downward, thereby The driving pawl 2431 drives the runner 24 to rotate by an angle, so that the motion transmitted by the rack 23 drives the telescopic blade 22 to extend in length; when the pressing handle 11 is released and pressed, the driving rod 24311 will act on the tension spring 246 Return to the lower position, ready for the next rotation of the wheel 24 . By adjusting an appropriate number of times, the length of the telescopic blade 22 will not be retched by the patient.

S3: After the camera 211 of the video laryngoscope assists the insertion of the trachea, pull out the video laryngoscope, take off the disposable rubber sleeve, and return the telescopic blade 22: Press the unlock switch 12 to stop the pawl 2432 from pulling on the traction rope 245 The lower part fails, so that the runner 24 can be reversed, and the rack 23 and the telescopic blade 22 can also be retracted.

S4: Take off the blade 2 of the video laryngoscope, and disinfect the blade 2.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, but not to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions in the embodiments of the present invention. .

Claims (6)

1. An adjustable anesthesia laryngoscope blade is composed of a handle (1), a display (3) connected at the upper end of the handle (1), and a blade (2) connected at the lower end of the handle (1), It is characterized in that a pressing handle (11) is arranged on the side of the handle (1) close to the blade (2), and an unlocking switch (12) is arranged on the side opposite to the pressing handle (11); The blade (2) is composed of a camera tube (21) and a telescopic blade (22); the telescopic blade (22) is internally connected with a rack (23), and the rack (23) passes through the runner (24) and the traction The wire (245) can move under the driving of the pressing handle (11), thereby driving the telescopic blade (22) to extend. 2. The blade of an anesthesia laryngoscope according to claim 1, characterized in that the runner (24) is rotatably connected to the inner wall of the handle (1) through a rotating shaft (241), and the rotating shaft (241) is spaced apart from each other. A gear (242) and a ratchet (243) are provided; the gear (242) is meshed with the rack (23); the ratchet (243) is provided with a driving pawl (2431) and a stop pawl ( 2432); the driving pawl (2431) is connected to the driving rod (24311) through a torsion spring (244), and can drive the ratchet (243) to step by step under the traction of the driving rod (24311). Rotation; the stop pawl (2432) is connected with the fixing rod (24321) fixed on the inner wall of the handle (1) through the torsion spring (244) to prevent the ratchet (243) from being reversed. 3 . The anesthesia laryngoscope blade according to claim 2 , wherein the lower end of the driving rod ( 24311 ) is connected with a pulling wire ( 245 ), and the upper end is connected with a tension spring ( 246 ) providing a restoring force. 4 . 4. An anesthesia laryngoscope blade according to claim 2, characterized in that, the stop end of the stop pawl (2432) is connected to the handle (1) through a traction wire (245) and a torsion spring (244) ) is connected to the unlocking switch (12) on the outer wall. 5. An anesthesia laryngoscope blade according to claim 1, characterized in that, the telescopic blade (22) is composed of several telescopic sections (221), and the former telescopic section (221) is sleeved on the latter telescopic section (221) At the rear end of the segment (221), the inner wall of the telescopic end segment (222) at the end of the telescopic blade (22) is connected with the end of the rack (23). 6 . The blade of an anesthesia laryngoscope according to claim 1 , characterized in that, the outer surface of the telescopic blade ( 22 ) is further provided with a disposable rubber sleeve adapted to its shape. 7 .

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