CN113577532A

CN113577532A - Pneumoperitoneum machine mechanical protection valve

Info

Publication number: CN113577532A
Application number: CN202110863300.2A
Authority: CN
Inventors: 周文武; 许青; 刘泽; 许献忠
Original assignee: China Netherlands Medical Science And Technology Hangzhou Co ltd
Current assignee: China Netherlands Medical Science And Technology Hangzhou Co ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2021-11-02
Anticipated expiration: 2041-07-29
Also published as: CN113577532B

Abstract

The invention discloses a mechanical protection valve of an pneumoperitoneum machine, which belongs to the technical field of pneumoperitoneum machines and comprises a valve seat, wherein a communicating cavity is arranged in the valve seat, an air inlet and an air outlet which are communicated with the communicating cavity are arranged on the outer wall of the valve seat, the opening part of the communicating cavity is communicated with the outer wall of the valve seat, a bulge part is arranged in the communicating cavity, a pressure relief seat is arranged in the bulge part in a penetrating manner, a pressure relief hole in a through hole form is arranged on the pressure relief seat and is communicated with the inside of the communicating cavity, a valve cover used for sealing the opening part of the communicating cavity is arranged on the outer wall of the valve seat, a cover plate is arranged in the valve cover, a ball head is arranged on the cover plate, and a sealing groove which is used for clamping the ball head and is communicated with the pressure relief hole is arranged at one end of the pressure relief seat, which penetrates into the communicating cavity. The invention has the beneficial effects that: and (3) carrying out secondary protection after the gas is decompressed, and controlling the gas pressure within a safety range of 10Kpa, thereby achieving the purpose of secondary protection.

Description

Pneumoperitoneum machine mechanical protection valve

Technical Field

The invention relates to the technical field of pneumoperitoneum machines, in particular to a mechanical protection valve of a pneumoperitoneum machine.

Background

A pneumoperitoneum machine is a dedicated device for establishing and maintaining pneumoperitoneum in laparoscopic surgery. Classified according to driving mode, pneumoperitoneum mainly falls into two categories: 1. pneumatic pneumoperitoneum machine. The pneumatic pneumoperitoneum machine is a continuous air supply mode, and air supply is stopped when the intra-abdominal pressure reaches a preset pressure. Pneumatic pneumoperitoneum machines typically have a maximum flow of only 4L/min. 2. Electronic pneumoperitoneum machine. The air supply flow of the electronic pneumoperitoneum machine is far larger than that of the pneumatic pneumoperitoneum machine, the highest flow can reach 30L/min (even 40L/min), the intra-abdominal pressure and the flow can be automatically controlled and adjusted, and the number can be displayed.

The existing mainstream pneumoperitoneum machine still has large pressure (about 100 Kpa) after the gas input end passes through the pressure reducing valve, and when the pressure reducing valve fails due to faults, instantaneous high pressure can be generated on the abdominal cavity in operation, so that great risk is generated on the operation.

Based on the above, the invention designs a pneumoperitoneum machine mechanical protection valve to solve the above problems.

Disclosure of Invention

The invention aims to provide a mechanical protection valve for a pneumoperitoneum machine, which aims to solve the problems that the existing mainstream pneumoperitoneum machine in the background technology still has larger pressure (about 100 Kpa) after a gas input end passes through a pressure reducing valve, and when the pressure reducing valve fails due to faults, instant high pressure is generated on an abdominal cavity in operation, and larger risk is generated on the operation.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a pneumoperitoneum machine mechanical protection valve, includes the disk seat, be equipped with the intercommunication chamber in the disk seat, be equipped with on its outer wall with air inlet, the gas outlet of intercommunication chamber intercommunication, the oral area and the disk seat outer wall in intercommunication chamber link up, be equipped with a bulge in the intercommunication chamber, wear to be equipped with the pressure release seat in the bulge, be equipped with the pressure release hole of through-hole form on the pressure release seat, pressure release hole and the intercommunication intracavity portion intercommunication, be equipped with the valve gap that is used for sealing intercommunication chamber oral area on the disk seat outer wall, be equipped with the apron in the valve gap, be equipped with a bulb on the apron, the one end that the pressure release seat penetrated the intercommunication intracavity is equipped with the seal groove that supplies the bulb block and communicate with the pressure release hole, the apron is driven its by elastic drive unit and is removed towards the intercommunication chamber, makes it will the oral area lid in intercommunication chamber closes and seals, makes simultaneously the bulb block is in the seal groove.

Preferably, the valve cover is sealed with the valve seat surface by a mounting gasket.

Preferably, the ball head is made of rubber.

Preferably, a threaded column is fixedly connected to the ball head, penetrates through the cover plate, and is sleeved with a nut in a threaded manner.

Preferably, the elastic driving unit comprises a gland installed in the valve cover, a spring is arranged between the gland and the cover plate, and two ends of the spring in the elastic direction elastically abut against the gland and the cover plate respectively.

Preferably, an adjusting screw penetrates through a vertical thread on the valve cover, one end of the adjusting screw penetrating into the valve cover abuts against the pressing cover, and when the thread on the valve cover is screwed, the pressing cover is driven to move downwards.

Compared with the prior art, the invention has the beneficial effects that: the secondary protection is carried out after the gas is decompressed, the gas pressure is controlled within the safety range of 10Kpa, so that the purpose of secondary protection is achieved, the screw thread is screwed on the valve cover through the adjusting screw, the compression amount of the spring is adjusted, the floating resistance of the cover plate is adjusted, and the pressure relief can be adjusted.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic cross-sectional view of the assembly structure of a mechanical protection valve of a pneumoperitoneum machine according to the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

1-valve seat, 2-valve cover, 3-nut, 4-spring, 5-gland, 6-adjusting screw, 7-threaded column, 8-ball head, 9-cover plate, 10-sealing gasket, 11-air inlet, 12-communicating cavity, 13-bulge, 14-pressure relief seat, 15-pressure relief hole and 16-sealing groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: a pneumoperitoneum machine mechanical protection valve comprises a valve seat 1, a communicating cavity 12 is arranged in the valve seat 1, an air inlet 11 and an air outlet which are communicated with the communicating cavity 12 are arranged on the outer wall of the valve seat 1, the opening part of the communicating cavity 12 is communicated with the outer wall of the valve seat 1, a convex part 13 is arranged in the communicating cavity 12, a pressure relief seat 14 is arranged in the convex part 13 in a penetrating way, a pressure relief hole 15 in a through hole form is arranged on the pressure relief seat 14, the pressure relief hole 15 is communicated with the inside of the communicating cavity 12, a valve cover 2 used for sealing the opening part of the communicating cavity 12 is arranged on the outer wall of the valve seat 1, the valve cover 2 is sealed with the surface of the valve seat 1 through a mounting sealing gasket 10 so as to improve the sealing of the valve cover 2, a cover plate 9 is arranged in the valve cover 2, a ball head 8 is arranged on the cover plate 9, a threaded column 7 is fixedly connected on the ball head 8, the threaded column 7 penetrates through the cover plate 9 and is sleeved with a nut 3 through a thread, the threaded column 7, the ball head 8 is arranged on the cover plate 9, one end of the pressure relief seat 14 penetrating into the communication cavity 12 is provided with a sealing groove 16 for clamping the ball head 8 and communicated with the pressure relief hole 15, the cover plate 9 is driven by an elastic driving unit to move towards the communication cavity 12 so as to cover and seal the opening part of the communication cavity 12, the ball head 8 is clamped in the sealing groove 16 at the same time so as to seal the pressure relief hole 15, the ball head 8 is made of rubber materials, so that the ball head 8 is clamped in the sealing groove 16 with better sealing effect, the elastic driving unit comprises a gland 5 arranged in the valve cover 2, a spring 4 is arranged between the gland 5 and the cover plate 9, two ends of the spring 4 in the elastic direction respectively elastically abut against the gland 5 and the cover plate 9, the cover plate 9 is elastically abutted by the spring 4, so that the cover plate 9 covers the opening part of the communication cavity 12 to seal the communication cavity 12, when the air pressure entering the air inlet 11 is too high, the air pressure pushes the cover plate 9 to move upwards, so that the cover plate 9 drives the ball head 8 to move upwards, and make bulb 8 break away from with the block state of seal groove, make too big atmospheric pressure go out by pressure release hole 15 pressure release, realize the pressure release purpose, adjusting screw 6 wears to be equipped with to vertical screw thread on the valve gap 2, adjusting screw 6 penetrates the one end in the valve gap 2 and supports gland 5, and when the screw thread is in thread spin on the valve gap 2, with drive gland 5 removal down, through rotating adjusting screw 6, adjusting screw 6 is in thread spin on valve gap 2, move with drive gland 5, thereby produce the compression to spring 4, adjust the compression of spring 4, and then adjust the upward resistance of apron 9, so can make the pressure release size adjust, or adjust the pressure release scope.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The mechanical protection valve of the pneumoperitoneum machine comprises a valve seat (1), wherein a communicating cavity (12) is arranged in the valve seat (1), an air inlet (11) and an air outlet which are communicated with the communicating cavity (12) are formed in the outer wall of the communicating cavity, the mechanical protection valve is characterized in that the opening of the communicating cavity (12) is communicated with the outer wall of the valve seat (1), a protruding portion (13) is arranged in the communicating cavity (12), a pressure relief seat (14) penetrates through the protruding portion (13), a pressure relief hole (15) in a through hole form is formed in the pressure relief seat (14), the pressure relief hole (15) is communicated with the inside of the communicating cavity (12), a valve cover (2) used for sealing the opening of the communicating cavity (12) is arranged on the outer wall of the valve seat (1), a cover plate (9) is arranged in the valve cover (2), a ball head (8) is arranged on the cover plate (9), and a clamping part for the ball head (8) to clamp is arranged at one end, penetrating into the communicating cavity (12), of the pressure relief seat (14), And the cover plate (9) is driven by an elastic driving unit to move towards the communication cavity (12) so as to cover and seal the opening part of the communication cavity (12), and the ball head (8) is clamped in the sealing groove (16).

2. A pneumoperitoneum mechanical protection valve according to claim 1, wherein the valve cover (2) is sealed with the valve seat (1) surface by a mounting gasket (10).

3. Pneumoperitoneum machine mechanical protection valve according to claim 1, wherein the ball head (8) is made of rubber.

4. The pneumoperitoneum machine mechanical protection valve according to claim 1, wherein a threaded column (7) is fixedly connected to the ball head (8), the threaded column (7) penetrates through the cover plate (9) and is sleeved with a nut (3).

5. The pneumoperitoneum machine mechanical protection valve according to claim 1, wherein the elastic driving unit comprises a gland (5) installed in the valve cover (2), a spring (4) is arranged between the gland (5) and the cover plate (9), and two ends of the spring (4) in the elastic direction elastically abut against the gland (5) and the cover plate (9) respectively.

6. A pneumoperitoneum machine mechanical protection valve according to claim 5, wherein an adjusting screw (6) is arranged on the valve cover (2) in a penetrating manner through a vertical thread, one end of the adjusting screw (6) penetrating into the valve cover (2) abuts against the gland (5), and when the valve cover (2) is screwed in the thread, the gland (5) is driven to move downwards.