CN215386919U

CN215386919U - Negative pressure drainage device for maxillofacial wound

Info

Publication number: CN215386919U
Application number: CN202120696912.2U
Authority: CN
Inventors: 张克春; 杨洁
Original assignee: Peoples Hospital of Leshan
Current assignee: Peoples Hospital of Leshan
Priority date: 2021-04-06
Filing date: 2021-04-06
Publication date: 2022-01-04
Anticipated expiration: 2031-04-06

Abstract

The utility model relates to the technical field of negative pressure drainage, in particular to a negative pressure drainage device for a maxillofacial wound, which is used for solving the problem that a piston in the negative pressure drainage device in the prior art can automatically retract under the action of negative pressure after being pulled out, so that the aim of continuously sucking effusion by negative pressure cannot be fulfilled. The disposable suction catheter comprises a needle cylinder and a piston assembly, wherein one end of the needle cylinder is provided with a suction tube communicated with the interior of the needle cylinder, the suction tube is connected with a scalp tube, the piston assembly comprises a piston plate positioned in the needle cylinder, one side of the piston plate is connected with a piston rod extending to the exterior of the needle cylinder, the tail end of the piston rod is provided with a handle, the needle cylinder is connected with an extension plate, and the bottom surface of the extension plate is provided with a plurality of fixing mechanisms capable of fixing the handle along the length direction of the extension plate. The handle can be fixed through the fixing mechanism, so that the piston assembly cannot automatically retract under the action of negative pressure, and accumulated liquid can be continuously sucked.

Description

Negative pressure drainage device for maxillofacial wound

Technical Field

The utility model relates to the technical field of negative pressure drainage, in particular to a negative pressure drainage device for a maxillofacial wound.

Background

Due to various accidents, wounds can be left on the maxillofacial part frequently, and when the wounds on the maxillofacial part are treated, a negative pressure drainage device is generally needed, the high vacuum technology of the negative pressure drainage device enables secretion and exudate to be fully drained, the wounds are tightly closed under the action of high negative pressure, the effect of internal fixation is achieved, seroma is prevented from being formed, potential bacteria culture medium is prevented from being formed in the wounds, therefore, the inflammatory reaction can be reduced, and the risk of wound infection can also be reduced.

Negative pressure drainage device includes the cylinder among the prior art, installs the piston in the cylinder, and the one end of cylinder is connected with the scalp pipe, and the scalp pipe is the needle tubing of subtracting syringe part, places the tip of scalp pipe in the hydrops department of wound during the use, then through outwards pulling the piston, the piston can produce the negative pressure at the inside outside gliding in-process of cylinder, and hydrops can get into the cylinder through the scalp pipe under the effect of negative pressure in to drainage the cylinder with patient's hydrops.

However, in the above negative pressure device, the piston will automatically retract under the action of negative pressure after being pulled out, and the purpose of continuously sucking accumulated liquid under negative pressure cannot be achieved. Therefore, the negative pressure drainage device which can enable the piston to automatically retract under the action of no negative pressure and can continuously suck accumulated liquid is urgently needed.

SUMMERY OF THE UTILITY MODEL

Based on the problems, the utility model provides a negative pressure drainage device for a maxillofacial wound, which is used for solving the problem that a piston in the negative pressure drainage device in the prior art can automatically retract under the action of negative pressure after being pulled out, so that the aim of continuously sucking effusion by negative pressure cannot be fulfilled. The handle can be fixed through the fixing mechanism, so that the piston assembly cannot automatically retract under the action of negative pressure, and accumulated liquid can be continuously sucked.

The utility model specifically adopts the following technical scheme for realizing the purpose:

the utility model provides a negative pressure drainage device for maxillofacial wound, includes the cylinder and can be in the gliding piston assembly of cylinder, the one end of cylinder is installed rather than the communicating suction tube in inside, it is connected with the scalp tube to attract the pipe, piston assembly is including being located the piston plate of cylinder, one side of piston plate is connected with the piston rod that extends to the cylinder outside, the handle is installed to the end of piston rod, be connected with the extension plate on the cylinder, the bottom surface of extension plate is equipped with a plurality of fixed handle's fixed establishment along its length direction.

One of the preferred structures of the fixing mechanism is: the fixing mechanism comprises a plurality of clamping grooves formed in the bottom surface of the extension plate, protrusions are further integrally formed at the upper end of the handle, and the protrusions can be located in the clamping grooves.

The preferred structure that can let draw-in groove and protruding joint get better does: the inner diameter of the clamping groove is gradually decreased from bottom to top, and the outer diameter of the protrusion is gradually increased from top to bottom.

Preferably, the lower edge of the clamping groove is provided with an arc-shaped chamfer, and the upper edge of the protrusion is also integrally formed with a convex ring along the outer peripheral surface of the protrusion.

The preferred structure that is convenient for protruding and draw-in groove joint, alternate segregation each other is: the side surface of the piston plate is provided with a ball socket, the end surface of the piston rod is integrally formed with a ball head, and the ball head is positioned in the ball socket and can rotate in the ball socket.

Another preferred structure of the fixing mechanism is: the fixing mechanism comprises a plurality of chains arranged on the bottom surface of the extension plate, the lower ends of the chains are connected with clamps, and the clamps can clamp the handles.

Preferably, the outer surface of the needle cylinder is further provided with a fixing band, and the fixing band is provided with a magic tape.

Preferably, a tee joint is arranged between the suction tube and the scalp tube.

The utility model has the following beneficial effects:

(1) the handle can be fixed through the fixing mechanism, so that the piston assembly cannot automatically retract under the action of negative pressure, and accumulated liquid can be continuously sucked.

(2) According to the utility model, after the piston rod drives the piston plate to be pulled out to a certain position, the protrusions are clamped in the corresponding clamping grooves, and the protrusions and the clamping grooves can prevent the piston plate from retracting downwards under the action of negative pressure, so that accumulated liquid can be continuously absorbed.

(3) According to the utility model, after the piston rod drives the piston plate to be pulled out to a certain position, the handle is clamped through the clamp, so that the piston plate can be prevented from retracting downwards under the action of negative pressure, and then effusion can be continuously absorbed.

(4) In the utility model, the ball head is positioned in the ball socket and can rotate in the ball socket, so the piston rod can drive the handle to move in a certain range along the radial direction of the needle cylinder, thereby being more convenient for clamping the bulge in the clamping groove and being more convenient for pulling the bulge out of the clamping groove.

(5) According to the utility model, when the accumulated liquid is absorbed into the needle cylinder and needs to be discharged from the needle cylinder, the device can be turned over, and then the piston rod is compressed backwards, so that the accumulated liquid in the needle cylinder is discharged from the tee joint, and the accumulated liquid can be discharged without detaching the scalp tube from the suction tube, thereby reducing the risk of infection.

Drawings

FIG. 1 is a schematic front sectional view of the fixing mechanism of the present invention when the fixing mechanism is a slot and a protrusion;

FIG. 2 is a schematic front sectional view of the present invention when the securing mechanism is a clip;

FIG. 3 is an enlarged view taken at A of FIG. 1 in accordance with the present invention;

FIG. 4 is an enlarged view of the utility model at B of FIG. 1;

FIG. 5 is an enlarged view at C of FIG. 2 in accordance with the present invention;

reference numerals: the device comprises a handle 1, an extension plate 2, a clamping groove 3, a piston rod 4, a piston plate 5, a needle cylinder 6, a fixing band 7, a suction tube 8, a tee joint 9, a scalp tube 10, a chain 11, a clamp 12, a bulge 13, an arc-shaped chamfer 14, a convex ring 15 and a bulb 16.

Detailed Description

For a better understanding of the present invention by those skilled in the art, the present invention will be described in further detail below with reference to the accompanying drawings and the following examples.

Example 1:

as shown in fig. 1-5, a negative pressure drainage device for maxillofacial wound, including cylinder 6 and the piston assembly that can slide in cylinder 6, the communicating suction tube 8 rather than inside is installed to the one end of cylinder 6, suction tube 8 is connected with scalp tube 10, piston assembly is including being located the piston plate 5 of cylinder 6, one side of piston plate 5 is connected with the piston rod 4 that extends to the cylinder 6 outside, handle 1 is installed to the end of piston rod 4, be connected with extension plate 2 on the cylinder 6, the bottom surface of extension plate 2 is equipped with a plurality of fixed establishment that can fix handle 1 along its length direction.

The working principle is as follows: when the device is needed to drain the jaw face of a patient, the scalp tube 10 can be fixed at the effusion of the patient, then the handle 1 is grasped to be pulled outwards, due to force transmission, the handle 1 can sequentially pull the piston rod 4 and the piston plate 5 to the outside of the outer needle cylinder 6, negative pressure can be generated between the piston plate 5 and the needle cylinder 6 at the moment, the effusion can pass through the scalp tube 10 under the action of the negative pressure, the suction tube 8 reaches the needle cylinder 6, after the handle 1 reaches a proper position, the handle 1 is fixed through the fixing mechanism, the piston plate 5 can not automatically retract under the action of the negative pressure, a continuous negative pressure can be generated between the piston plate 5 and the needle cylinder 6, and continuous suction can be performed on the effusion.

Example 2:

as shown in fig. 1, 3 and 4, on the basis of the above embodiment 1, this embodiment provides one of the preferable structures of the fixing mechanism, that is, the fixing mechanism includes a plurality of slots 3 formed on the bottom surface of the extension board 2, and the upper end of the handle 1 is further integrally formed with a protrusion 13, and the protrusion 13 can be located in the slot 3.

In this embodiment: after piston rod 4 takes piston plate 5 to outwards pull out certain position, with protruding 13 joint in corresponding draw-in groove 3, protruding 13 and the 3 joints of draw-in groove can prevent piston plate 5 down retracting under the effect of negative pressure to can carry out the absorption that lasts to the hydrops.

Preferably, the inner diameter of the clamping groove 3 is gradually decreased from bottom to top, the outer diameter of the protrusion 13 is gradually increased from top to bottom, an arc-shaped chamfer 14 is arranged at the edge of the lower part of the clamping groove 3, and a convex ring 15 is integrally formed on the protrusion 13 along the outer peripheral surface of the protrusion. Due to the existence of the arc-shaped chamfer 14, when the protrusion 13 reaches the clamping groove 3, the protrusion can easily slide into the clamping groove 3, and the same protrusion 13 can easily come out of the clamping groove 3; the clamping between the protrusion 13 and the card slot 3 can be more stable due to the annular protrusion 13 and the specific shapes of the protrusion 13 and the card slot 3.

The preferred structure that is convenient for protrusion 13 and draw-in groove 3 to joint each other, separate each other is: the side surface of the piston plate 5 is provided with a ball socket, the end surface of the piston rod 4 is integrally formed with a ball head 16, and the ball head 16 is positioned in the ball socket and can rotate in the ball socket. Because the ball head 16 is located in the ball socket and can rotate in the ball socket, the piston rod 4 can drive the handle 1 to move in a certain range along the radial direction of the needle cylinder 6, so that the protrusion 13 can be more conveniently clamped in the clamping groove 3, and the protrusion 13 can be more conveniently pulled out from the clamping groove 3.

Example 3:

as shown in fig. 2 and 5, on the basis of the above embodiment 1, this embodiment provides another preferable structure of the fixing mechanism, that is, the fixing mechanism includes a plurality of chains 11 mounted on the bottom surface of the extension board 2, and a clip 12 is connected to the lower end of the chains 11, and the clip 12 can clip the handle 1. After the piston rod 4 with the piston plate 5 is pulled out to a certain position, the handle 1 is clamped by the clamp 12, so that the piston plate 5 can be prevented from retracting under the action of negative pressure, and then effusion can be continuously absorbed.

Preferably, fixed band 7 is still installed to the surface of cylinder 6, and fixed band 7 is the magic subsides, can conveniently fix the device at patient's head through fixed band 7, and fixed band 7 can be adjusted according to patient's head circumference size to the hydrops of drainage patient jaw face department of being convenient for more.

Preferably, install tee bend 9 between suction tube 8 and scalp tube 10, after the device absorbs the hydrops in syringe 6, when need be discharged the hydrops from syringe 6, can overturn the device, then compress piston rod 4 back, make the hydrops in syringe 6 discharge from tee bend 9, need not dismantle scalp tube 10 from suction tube 8 and just can discharge the hydrops like this to can reduce the risk of infecting.

The above is an embodiment of the present invention. The embodiments and specific parameters in the embodiments are only for the purpose of clearly illustrating the verification process of the utility model, and are not intended to limit the scope of the utility model, which is defined by the claims.

Claims

1. A negative pressure drainage device for maxillofacial wound, includes cylinder (6) and the piston assembly that can slide in cylinder (6), its characterized in that: the utility model discloses a syringe, including cylinder (6), suction pipe (8), piston assembly, extension board (2), the bottom surface of extension board (2) is equipped with a plurality of fixed establishment that can fix handle (1) along its length direction, the one end of cylinder (6) is installed rather than communicating suction pipe (8) in inside, suction pipe (8) are connected with scalp tube (10), piston assembly is including piston plate (5) that are located cylinder (6), one side of piston plate (5) is connected with piston rod (4) that extend to cylinder (6) outside, handle (1) are installed to the end of piston rod (4), be connected with extension board (2) on cylinder (6), the bottom surface of extension board (2) is equipped with a plurality of fixed establishment that can fix handle (1) along its length direction.

2. The negative pressure drainage device for maxillofacial wounds according to claim 1, wherein: the fixing mechanism comprises a plurality of clamping grooves (3) formed in the bottom surface of the extension plate (2), protrusions (13) are further integrally formed at the upper end of the handle (1), and the protrusions (13) can be located in the clamping grooves (3).

3. The negative pressure drainage device for maxillofacial wounds according to claim 2, wherein: the inner diameter of the clamping groove (3) is gradually decreased from bottom to top, and the outer diameter of the protrusion (13) is gradually increased from top to bottom.

4. A negative pressure drainage device for maxillofacial wounds according to claim 3, wherein: the edge of the lower part of the clamping groove (3) is provided with an arc chamfer (14), and a convex ring (15) is integrally formed on the bulge (13) along the outer peripheral surface thereof.

5. The negative pressure drainage device for maxillofacial wounds according to any one of claims 1 to 4, wherein: the side surface of the piston plate (5) is provided with a ball socket, the end surface of the piston rod (4) is integrally formed with a ball head (16), and the ball head (16) is positioned in the ball socket and can rotate in the ball socket.

6. The negative pressure drainage device for maxillofacial wounds according to claim 1, wherein: the fixing mechanism comprises a plurality of chains (11) arranged on the bottom surface of the extension plate (2), the lower ends of the chains (11) are connected with clamps (12), and the clamps (12) can clamp the handle (1).

7. The negative pressure drainage device for maxillofacial wounds according to claim 1, wherein: the outer surface of the needle cylinder (6) is further provided with a fixing band (7), and a magic tape is arranged on the fixing band (7).

8. The negative pressure drainage device for maxillofacial wounds according to claim 1, wherein: a tee joint (9) is arranged between the suction tube (8) and the scalp tube (10).