CN219764067U

CN219764067U - Airflow control part and handheld suction device

Info

Publication number: CN219764067U
Application number: CN202222999128.6U
Authority: CN
Inventors: 张灿
Original assignee: Fourth Medical Center General Hospital of Chinese PLA
Current assignee: Fourth Medical Center General Hospital of Chinese PLA
Priority date: 2022-11-10
Filing date: 2022-11-10
Publication date: 2023-09-29
Anticipated expiration: 2032-11-10

Abstract

The utility model discloses an airflow control part and a handheld suction device, wherein the airflow control part comprises: a tube body having an inlet for connection with a tail portion of the suction performing tube and an outlet for connection with the suction tube at a front end and a rear end in an axial direction; an inner cavity is formed in the pipe body, a separation part is arranged in the inner cavity, the separation part is positioned in a front side cavity of the inner cavity and divides the front side cavity into a first diversion cavity and a second diversion cavity, the first diversion cavity is communicated with the inlet, an air inlet hole is formed in the pipe wall of the pipe body and penetrates through the second diversion cavity, and the first diversion cavity and the second diversion cavity are respectively communicated with a rear side cavity of the inner cavity; and the diaphragm component is arranged in the second diversion cavity and is used for allowing airflow to pass through from the air inlet hole to the rear side cavity direction and reversely cut off.

Description

Airflow control part and handheld suction device

Technical Field

The utility model relates to the technical field of medical equipment, in particular to an airflow control component and a handheld suction device.

Background

It is known that waste fluids generated during some surgical procedures, which may include body fluids generated by the body components being manipulated and waste fluids formed after use for application to the body tissues being manipulated, need to be separated from the body components being manipulated in a timely manner, in the prior art, by using medical aspiration systems to separate the waste fluids from the body tissues in a timely manner.

In the prior art, a medical suction system generally includes a container for temporarily storing waste liquid, a suction pump connected to a tail portion of the hand-held suction device through the suction tube, a suction tube connected to the suction tube, and a suction performing tube formed at a front portion of the hand-held suction device, a distal end of the suction performing tube being open, the suction pump being operated so that a negative pressure is formed inside the hand-held suction device including the suction performing tube, thereby enabling a distal end of the suction performing tube to suck waste liquid on a surface of human tissue, and allowing the waste liquid to flow along the inside of the hand-held suction device and the suction tube to finally enter the container.

It is easily understood that the degree of negative pressure in the suction performing tube of the hand-held suction device needs to be controlled for controlling the flow rate of the sucked waste liquid and avoiding damage to human tissue. For example, when the suction flow rate of the waste liquid needs to be reduced, the negative pressure degree can be controlled to be reduced, for example, when the suction flow rate of the waste liquid needs to be increased, the negative pressure degree can be controlled to be increased, for example, when the distal end of the suction execution pipe is attached to the surface of the human tissue to generate strong suction which possibly damages the human tissue, the suction force to the surface of the human tissue can be reduced by timely reducing the negative pressure degree, and the damage to the human tissue can be avoided.

In the prior art, the negative pressure degree is controlled by arranging an air inlet hole on the outer peripheral surface of a handle part (tubular structure) of the handheld suction device, which is held by a hand of a person, in particular, an inner cavity which is radially expanded is formed in the handle part and is communicated with an inner hole of a suction executing pipe, the air inlet hole radially penetrates into the inner cavity, external air flow can enter the inner cavity through the air inlet hole to compensate the negative pressure degree, and the hand can control the interior of the handheld suction device to the required negative pressure degree by controlling the opening degree of the air inlet hole. For example, when the degree of negative pressure in the suction performing tube needs to be reduced, the opening degree of the air intake hole may be increased, more air flow enters the inner cavity through the air intake hole, and when the degree of negative pressure in the suction performing tube needs to be increased, the opening degree of the air intake hole may be reduced, and less air flow enters the inner cavity.

However, a part of the waste liquid sucked through the inner chamber may be ejected (flown out) from the air intake hole because: the opening of the hand-operated air intake is generally delayed from the change of the negative pressure level in the hand-held suction device, if the negative pressure level in the hand-held suction device is larger in the previous moment due to some reasons, and the negative pressure level in the hand-held suction device is smaller in the latter moment (for example, when the hand-held suction device sucks larger falling tissue fragments in the hand-held suction device, the negative pressure level is increased before entering the inner cavity, and the negative pressure level is reduced immediately after entering the inner cavity), that is, the change of the negative pressure level in two moments is greatly changed, so that a large amount of waste liquid entering the inner cavity cannot be timely pumped away by the negative pressure pump, and further the waste liquid in the inner cavity may be sprayed (or flows out) through the air intake.

Disclosure of Invention

In view of the above technical problems in the prior art, embodiments of the present utility model provide an airflow control component and a handheld suction device.

In order to solve the technical problems, the technical scheme adopted by the embodiment of the utility model is as follows:

an airflow control member comprising:

a tube body having an inlet for connection with a tail portion of the suction performing tube and an outlet for connection with the suction tube at a front end and a rear end in an axial direction; an inner cavity is formed in the pipe body, a separation part is arranged in the inner cavity, the separation part is positioned in a front side cavity of the inner cavity and divides the front side cavity into a first diversion cavity and a second diversion cavity, the first diversion cavity is communicated with the inlet, an air inlet hole is formed in the pipe wall of the pipe body and penetrates through the second diversion cavity, and the first diversion cavity and the second diversion cavity are respectively communicated with a rear side cavity of the inner cavity;

and the diaphragm component is arranged in the second diversion cavity and is used for allowing airflow to pass through from the air inlet hole to the rear side cavity direction and reversely cut off.

Preferably, the partition member is a partition plate that partitions the inner chamber into the first flow guide chamber and the second flow guide chamber.

Preferably, the partition is offset so that the minimum through-flow cross section of the first flow guiding chamber is larger than the maximum through-flow cross section of the second flow guiding chamber.

Preferably, a section of a region of the second diversion cavity near the rear side chamber is elliptical, and the diaphragm component is arranged in the region; wherein:

the diaphragm component comprises a jacket and a conical part which is integrally formed with the jacket and is positioned on the radial inner side of the jacket, the jacket is fixed on the cavity wall of the second flow guide cavity, the conical part faces the rear side cavity, a sealing gap is formed at the end part of the conical part, and air flow from the air inlet hole to the rear side cavity can open the sealing gap.

Preferably, the separation component is an inner pipe, the inner pipe extends from the inlet to the outlet, the inner hole of the inner pipe is the first diversion cavity, and the annular cavity between the inner pipe and the pipe body is the second diversion cavity.

Preferably, the diaphragm member is disposed in an area of the second diversion cavity near the rear side valve cavity, the diaphragm member includes a retaining ring and a diaphragm disc, the retaining ring is disposed in the second diversion cavity of the annular structure, the diaphragm disc is disposed at a rear side of the retaining ring, an inner side of the diaphragm disc in a radial direction is attached and fixed to the retaining ring, a vent hole is formed in the retaining ring, and an air flow from the air inlet hole to the rear side chamber direction is deformed to the rear side through the vent hole so as to be opened.

Preferably, a cover plate capable of axially sliding is arranged on the outer peripheral surface of the pipe body in a region corresponding to the air inlet hole, and the opening of the air inlet hole is controlled by axially sliding the cover plate.

Preferably, a boss is formed on the outer peripheral surface of the pipe body, the air inlet hole is formed in the boss, a pressing plate is fixed on the outer side of the boss, and the side edge of the cover plate extends into the space between the pressing plate and the boss.

Preferably, the pipe body is integrally formed with the partition member.

The utility model also discloses a handheld suction device, which comprises a suction executing pipe and the airflow control component, wherein an inlet of a pipe body in the airflow control component is connected to the tail part of the suction executing pipe.

Compared with the prior art, the airflow control component provided by the embodiment of the utility model has the beneficial effects that:

through separating the water conservancy diversion chamber (second water conservancy diversion chamber) with the inlet port intercommunication in the body to set up the diaphragm part that controls water conservancy diversion chamber break-make through elastic deformation in the water conservancy diversion intracavity, and then can effectively close the water conservancy diversion chamber when filling a large amount of waste liquids in the body, and then can effectively reduce the risk of waste liquid from inlet port blowout (outflow).

Drawings

Fig. 1 is a front view of a hand-held suction device provided by an embodiment of the present utility model.

Fig. 2 is a front cross-sectional view of an airflow control member of a first configuration (diaphragm member closed state) provided by an embodiment of the present utility model.

Fig. 3 is a cross-sectional view taken along A-A of fig. 2.

Fig. 4 is a B-direction view of fig. 2.

Fig. 5 is a view in the direction C of fig. 2.

Fig. 6 is a front cross-sectional view of an airflow control member of a first construction provided by an embodiment of the utility model (the diaphragm member being in an open state).

Fig. 7 is a front cross-sectional view of an airflow control member of a second construction provided in an embodiment of the utility model (the diaphragm member being in an open state).

In the figure:

100-airflow control means; 200-aspiration executive tube; 300-suction tube; 10-a tube body; 11-a first diversion cavity; 11' -a first flow guiding cavity; 12-a second diversion cavity; 12' -a second diversion cavity; 13-a backside chamber; 14-inlet; 15-outlet; 16-an air inlet hole; 20-a partition member; a 20' -partition member; 30-a diaphragm member; 31-coat; 32-cone; 33-sealing the gap; a 30' -separator member; 31' -retaining ring; 311' -vent; a 32' -diaphragm disc; 40-cover plate; 41-press plate.

Detailed Description

The present utility model will be described in detail below with reference to the drawings and detailed description to enable those skilled in the art to better understand the technical scheme of the present utility model.

As shown in fig. 1, the present utility model discloses an air flow control part 100 and a hand-held suction device including the air flow control part 100, the hand-held suction device further including a suction performing tube 200, a front end (distal end) of the suction performing tube 200 being opened for being brought close to human tissue to be operated for sucking waste liquid on the surface of the human tissue.

As shown in fig. 1 to 7, the airflow control member 100 includes a tube body 10 and a diaphragm member; the tube body 10 has an inlet 14 at a front end in an axial direction and an outlet 15 at a rear end in an axial direction, the inlet 14 is connected to a tail portion of the suction performing tube 200, the outlet 15 is connected to the suction tube 300, and an inner cavity is formed inside the tube body 10, so that waste liquid on a surface of human tissue sequentially passes through the inner hole of the suction performing tube 200 under suction of the suction pump at a distal end of the suction tube 300, enters the tube body 10 through the inlet 14 of the tube body 10, flows out of the outlet 15 after flowing through the inner cavity of the tube body 10, flows into the suction tube 300, and finally enters the waste liquid container. The tube 10 serves as a handle for a hand-held suction device for the human hand to hold.

A partition member 2020 'is provided in the front side chamber of the inner cavity of the tube body 10, the partition member 20, 20' dividing the front side chamber into a first guide chamber 11, 11 'and a second guide chamber, the inlet 14 communicating with the first guide chamber 11, 11', and the rear side chamber 13 of the inner cavity communicating with both the first guide chamber 11, 11 'and the second guide chamber 12, 12'.

The pipe body 10 is provided with an air inlet hole 16 on the pipe wall adjacent to the second diversion cavity 12, 12', the air inlet hole 16 penetrates to the second diversion cavity 12, 12', as shown in fig. 5, and the air inlet hole 16 extends along the axial direction for a section, namely, the air inlet hole 16 is provided as a long hole extending along the axial direction.

A diaphragm member is provided in the second flow directing chamber 12, 12' which is arranged to allow the flow of air from the air inlet aperture 16 along the second flow directing chamber 12, 12' to the rear side chamber 13 by means of elastic deformation and to prevent the flow of fluid from the rear side chamber 13 along the second flow directing chamber 12, 12' to the air inlet aperture 16 by means of elastic return.

When the suction pump at the distal end of the suction tube 300 operates to form a negative pressure in the suction performing tube 200, the waste liquid on the surface of the human tissue sequentially passes through the inner hole of the suction performing tube 200, the first guide chamber 11, 11', the rear side chamber 13, the suction tube 300, and finally enters the waste liquid container.

In the sucking process, if the sucking amount of the waste liquid needs to be controlled or regulated, as shown in fig. 6 and 7, the air inlet hole 16 can be opened (the air inlet hole 16 is blocked or opened by a finger), the external air flow (air) enters the second diversion cavity 12, 12' through the air inlet hole 16, and the diaphragm part is forced to be opened to enter the rear side cavity 13 for controlling the negative pressure degree in the rear side cavity 13, so that the purpose of controlling the sucking amount of the waste liquid is achieved.

When in a more stable suction state and the diaphragm member is in an open state, the pressure in the rear chamber 13 (the degree of negative pressure is high) is slightly lower than the pressure in the second diversion chamber 12, 12', and when the degree of negative pressure in the interior of the hand-held suction device is high in the previous moment and the degree of negative pressure in the interior of the hand-held suction device is low in the latter moment due to some reasons (for example, when the interior of the hand-held suction device sucks in large fallen tissue fragments, the degree of negative pressure is increased before entering the inner chamber and the degree of negative pressure is reduced immediately after entering the inner chamber), and thus when a large amount of waste water enters the rear chamber 13, as shown in fig. 2, the pressure in the rear chamber 13 is increased and the elastic reset of the diaphragm member causes the diaphragm member to be closed, so that the waste liquid entering the rear chamber 13 can be effectively prevented from being ejected (flowing out) from the air inlet hole 16 through the second diversion chamber 12, 12'.

The separator members 20, 20 'of two structures and the diaphragm members corresponding to the separator members 20, 20' are described below.

Partition member 20 and diaphragm member of the first structure:

as shown in fig. 2 to 6, the partition member 20 is a partition plate integrally injection-molded with the pipe body 10, the partition plate partitions the front side chamber of the inner cavity of the pipe body 10 into a first guide chamber 11 having a circular-segment-shaped cross section and a second guide chamber 12 having an elliptical-shaped cross section, and the partition plate is constructed in an arc-shaped structure, so that the cross section of the end of the second guide chamber 12 away from the air inlet hole 16 is larger than the cross section of the end near the air inlet hole 16. And, the minimum through-flow cross section of the first diversion cavity 11' is made larger than the maximum through-flow cross section of the second diversion cavity 12 for enabling more waste liquid to pass through the first diversion cavity 11.

The diaphragm member is integrally injection-molded from a silicone material, and includes an oval-shaped outer jacket 31 and a tapered portion 32 located radially inward of the outer jacket 31, and a seal slit is formed at an end portion of the tapered portion 32, and in a natural state, the seal slit is in a closed state. During installation, the jacket 31 is glued to the chamber wall of the second flow-guiding chamber 12 in the region close to the rear chamber 13, with the end of the taper 32 facing the rear chamber 13. When the air inlet hole 16 is opened, air flow enters the second diversion cavity 12 through the air inlet hole 16, and forces the sealing gap 33 at the end part of the cone part 32 to open, and enters the rear side cavity 13 through the diaphragm part, and when a large amount of waste liquid is flushed into the rear side cavity 13, the pressure in the rear side cavity 13 is increased, and the cone part 32 is elastically reset, so that the sealing gap 33 is closed again, and further the waste liquid can be effectively prevented from flowing out of the air inlet hole 16 through the second diversion cavity 12.

The partition member 20' and the diaphragm member of the second structure:

as shown in fig. 7, the partition member 20' is an inner tube extending from the inlet 14 toward the outlet 15 for a certain length, the inner hole of the inner tube serves as a first guide chamber 11', and the annular chamber between the inner tube and the tube body 10 serves as a second guide chamber 12'.

The diaphragm member is disposed in the area of the second diversion chamber 12' near the rear side chamber 13, the diaphragm member includes a retaining ring 31' and a diaphragm disc 32', the retaining ring 31' is fixed in the area of the second diversion chamber 12' near the rear side chamber 13 by a snap spring, a plurality of vent holes 311' are opened on the retaining ring 31', the diaphragm disc 32' is made of rubber material, the diaphragm disc 32' is disposed at the rear side of the retaining ring 31', and the radially inner side of the diaphragm disc 32' is adhered and fixed with the retaining ring 31', so that the radially outer side of the diaphragm disc 32' is elastically deformed toward the rear side to cause the vent holes 311' to be opened and the vent holes 311' to be closed by elastic restoration. When the air intake hole 16 is opened, air flow enters the second diversion cavity 12' through the air intake hole 16 and forces the radial outer side of the diaphragm disc 32' of the diaphragm part to deform backwards so that the vent hole 311' is opened, air flow enters the rear side cavity 13 through the vent hole 311', and when the rear side cavity 13 is flushed with a large amount of waste liquid, the pressure in the rear side cavity 13 is increased and the diaphragm disc 32' is elastically reset so that the vent hole 311' is closed again, and the waste liquid can be effectively prevented from flowing out of the air intake hole 16 through the second diversion cavity 12'.

In some preferred embodiments, an axially slidable cover plate 40 is provided on the outer peripheral surface of the tube body 10 in a region corresponding to the air intake hole 16, and a human hand controls the opening of the air intake hole 16 by sliding the cover plate 40. Specifically, the outer peripheral surface of the pipe body 10 is formed with a boss at the area of the air inlet hole 16, a pressing plate 41 is fixed on the boss at the periphery of the air inlet hole 16, and the side edge of the cover plate 40 extends between the pressing plate 41 and the boss, so that the cover plate 40 is slidably limited at the air inlet hole 16, and the opening of the air inlet hole 16 can be controlled by rubbing the cover plate 40 by hands.

The airflow control member 100 and the hand-held suction device provided by the present utility model have the advantages that:

through separating the water conservancy diversion chamber (second water conservancy diversion chamber 12, 12') with inlet port 16 intercommunication in the body 10 to set up the diaphragm part that controls the water conservancy diversion chamber break-make through elastic deformation in the water conservancy diversion chamber, and then can effectively close the water conservancy diversion chamber when filling a large amount of waste liquids in the body 10, and then can effectively reduce the risk of waste liquid from inlet port 16 blowout (outflow).

The above embodiments are only exemplary embodiments of the present utility model and are not intended to limit the present utility model, the scope of which is defined by the claims. Various modifications and equivalent arrangements of this utility model will occur to those skilled in the art, and are intended to be within the spirit and scope of the utility model.

Claims

1. An airflow control member, comprising:

2. The airflow control member of claim 1, wherein the dividing member is a partition that divides the interior cavity into the first and second flow directing cavities.

3. The airflow control member of claim 2, wherein the baffle is offset such that a minimum flow cross-section of the first flow directing chamber is greater than a maximum flow cross-section of the second flow directing chamber.

4. A gas flow control member as claimed in claim 3, wherein a region of the second flow directing chamber adjacent the rear side chamber is elliptical in cross section, the diaphragm member being disposed in said region; wherein:

5. The airflow control member according to claim 1, wherein the partition member is an inner tube extending from the inlet toward the outlet, the inner hole of the inner tube is the first flow guiding chamber, and the annular chamber between the inner tube and the tube body is the second flow guiding chamber.

6. The airflow control member according to claim 5, wherein the diaphragm member is provided in an area of the second flow guiding chamber near the rear side valve chamber, the diaphragm member includes a retainer ring provided in the second flow guiding chamber of the annular structure, and a diaphragm disc provided on a rear side of the retainer ring and attached and fixed to the retainer ring on a radially inner side thereof, and the retainer ring is provided with a vent hole through which an airflow in a direction from the intake hole to the rear side chamber is caused to deform to open toward the rear side.

7. The airflow control member according to claim 1, wherein a region on the outer peripheral surface of the tube body corresponding to the air intake hole is provided with a cover plate capable of axial sliding, the cover plate controlling the opening degree of the air intake hole by axial sliding.

8. The airflow control member according to claim 7, wherein a boss is formed on an outer peripheral surface of the pipe body, the air intake hole is opened on the boss, a pressing plate is fixed to an outer side of the boss, and a side edge of the cover plate extends between the pressing plate and the boss.

9. The airflow control member according to claim 1, wherein the tube body is integrally formed with the partition member.

10. A hand-held suction device comprising a suction performing tube, further comprising an airflow control member according to any one of claims 1 to 9, wherein an inlet of a tube body in the airflow control member is connected to a tail of the suction performing tube.