CN-121971721-A - Gastrointestinal fluid pressure reducing device for gastrointestinal surgery

CN121971721ACN 121971721 ACN121971721 ACN 121971721ACN-121971721-A

Abstract

The invention belongs to the technical field of surgical instruments, and particularly relates to a gastrointestinal fluid pressure reducing device for gastrointestinal surgery, which comprises a shell, a negative pressure assembly, a cleaning assembly and a switching mechanism, wherein an opposite joint is arranged on the shell, the switching mechanism is arranged in the shell, the switching mechanism drives the negative pressure assembly and the cleaning assembly to respectively butt joint with the opposite joint in a negative pressure mode and a cleaning mode and respectively form negative pressure and release cleaning fluid in a pipeline connected with the opposite joint, the negative pressure assembly is a negative pressure vortex pump, the cleaning assembly is an infusion screw pump, the switching mechanism comprises a toothed ring and a motor, the toothed ring is rotationally arranged in the shell, a transmission gear is arranged on an output shaft of the motor and is meshed with the outer side of the toothed ring, the inner side of the toothed ring is meshed with a rotating shaft of the negative pressure vortex pump and a transmission rod of the infusion screw pump, and the positive and negative rotation of the toothed ring is used for driving the negative pressure vortex pump and the infusion screw pump to respectively switch to the position of the opposite joint and drive the rotating shaft and the transmission rod to rotate, and the negative pressure and the cleaning pipeline can be respectively provided through the switching positions.

Inventors

XIE HAO
HUANG YONG
ZOU JUNWEI
WU ZHAOYING
ZHANG LEI
LIN XIDONG

Assignees

皖南医学院第二附属医院

Dates

Publication Date: 20260505
Application Date: 20260204

Claims (10)

1. The gastrointestinal fluid pressure reducing device for gastrointestinal surgery is characterized by comprising a shell, a negative pressure component, a cleaning component and a switching mechanism, wherein an opposite joint is arranged on the shell, the switching mechanism is arranged in the shell, the negative pressure component and the cleaning component are symmetrically arranged on the switching mechanism based on the center of the shell, and the switching mechanism drives the negative pressure component and the cleaning component to be respectively in butt joint with the opposite joint in a negative pressure mode and a cleaning mode and respectively form negative pressure and release cleaning fluid in a pipeline connected with the opposite joint.
2. The gastrointestinal fluid decompression device for gastrointestinal surgery according to claim 1, wherein the negative pressure assembly is a negative pressure vortex pump, the cleaning assembly is an infusion screw pump, the switching mechanism comprises a toothed ring and a motor, the toothed ring is rotatably arranged in the shell, a transmission gear is arranged on an output shaft of the motor and is meshed with the outer side of the toothed ring, the inner side of the toothed ring is meshed with a rotating shaft of the negative pressure vortex pump and a transmission rod of the infusion screw pump, and the positive and negative rotation of the toothed ring is used for driving the negative pressure vortex pump and the infusion screw pump to be respectively switched to a position in butt joint with the butt joint and driving the rotating shaft and the transmission rod to rotate.
3. The gastrointestinal fluid pressure reducing device for gastrointestinal surgery according to claim 2, wherein the negative pressure peripheral pump is provided with an air inlet and an air outlet, rubber rings are arranged on the air inlet and the air outlet, the air inlet faces one side of the butt joint opening, the air inlet is positioned below the butt joint opening after the negative pressure peripheral pump is switched to the butt joint position, and the air outlet is communicated into the collecting cavity through a hose.
4. The gastrointestinal fluid pressure reducing device for gastrointestinal surgery according to claim 2, wherein the infusion screw pump is provided with a fluid inlet and a fluid outlet, rubber rings are arranged on the fluid inlet and the fluid outlet, the fluid outlet faces one side of the butt joint opening, the fluid outlet is positioned below the butt joint opening after the infusion screw pump is switched to the butt joint position, and the fluid inlet is communicated into the fluid storage cavity through a hose.
5. The gastrointestinal fluid pressure reducing device for gastrointestinal surgery according to claim 2, wherein the rotating shaft extends to the outside of the negative pressure peripheral pump, a first gear is connected to the rotating shaft, the transmission rod extends to the outside of the infusion screw pump, a second gear is connected to the transmission rod, and the first gear and the second gear are both meshed with the inner side of the toothed ring.
6. The gastrointestinal fluid pressure reducing device according to claim 5, wherein a sun gear is further provided in the housing, the sun gear being disposed concentrically with the ring gear, the sun gear being meshed with the first gear and the second gear.
7. The gastrointestinal fluid pressure reducing device for gastrointestinal surgery according to claim 4, wherein an interface cover plate is arranged on the interface, the interface cover plate is arranged below the interface in a sliding manner, and the air inlet and the liquid outlet push the interface cover plate to slide horizontally and be communicated with the interface when being switched.
8. The gastrointestinal fluid pressure reducing device for gastrointestinal surgery according to claim 4, wherein a sliding rod is arranged on the shell, a handle extends out of the side face of the interface cover plate, the handle is sleeved on the sliding rod in a sliding mode, and springs are sleeved on the sliding rod on two sides of the handle and used for pushing the interface cover plate to reset.
9. The gastrointestinal fluid pressure reducing device for gastrointestinal surgery according to claim 8, wherein semicircular notches which are consistent with the shapes of the air inlet and the liquid outlet are respectively formed on two sides of the interface cover plate, which are abutted against the air inlet and the liquid outlet.
10. The gastrointestinal fluid pressure reducing device for gastrointestinal surgery according to claim 4, wherein the air inlet and the liquid outlet are respectively provided with an air inlet cover plate and a liquid outlet cover plate, the air inlet cover plate is elastically and slidably arranged on the air inlet, and the liquid outlet cover plate is elastically and slidably arranged on the liquid outlet.

Description

Gastrointestinal fluid pressure reducing device for gastrointestinal surgery Technical Field The invention belongs to the technical field of surgical instruments, and particularly relates to a gastrointestinal fluid pressure reducing device for gastrointestinal surgery. Background The gastrointestinal fluid pressure reducing device is an important medical device and is mainly used for leading gas, liquid or digestive contents accumulated in the gastrointestinal tract out of the body in a negative pressure suction mode, so that the aims of reducing the pressure in the gastrointestinal tract, relieving or preventing abdominal distension, relieving the tension of an anastomotic orifice or a suture position, promoting the healing of the anastomotic orifice or suture position, improving the blood circulation of the gastrointestinal wall and recovering the intestinal function are fulfilled. The core working principle is to establish a closed drainage channel from stomach or intestinal canal to outside body and to generate controllable attractive force by means of negative pressure source such as electric negative pressure aspirator, portable manual negative pressure device or central negative pressure system. After the decompression device finishes decompression, residual gastric juice attached to the tube wall moves outwards along with the tube in the tube drawing process, and the damage is caused in two main modes, namely, firstly, gastric juice possibly drops or adheres to the pharynx and the respiratory tract inlet, and secondly, gastric juice is more common and directly contacts with the mucous membrane of the nasopharynx. When the tube and nasal mucosa are mechanically rubbed, gastric juice on the tube wall is effectively "smeared" on the mucosal surface, and the friction can cause microscopic or even macroscopic tiny wound surfaces. The combination of chemical stimulation and physical wound surface makes gastric acid and digestive enzyme more easily penetrate and damage submucosa, thus leading to burning sensation and pain of nasal cavity and pharyngeal after tube drawing, clinical manifestation of congestion and red swelling of mucous membrane, and even causing erosion or ulcer in severe cases. In the case of patients who need to rely on gastrointestinal decompression for a long period of time, the nasopharyngeal mucosa is already in a sub-healthy state of sustained compression and stimulation due to prolonged catheter retention time, and the tolerability thereof is further reduced. Therefore, the risk and severity of the injury are significantly increased each time the catheter is replaced or finally pulled out, and the occurrence of complications such as chronic rhinitis and pharyngitis may be increased by long-term repeated stimulation. To address this risk, it is common practice in the clinic to try to separate the tubing from the negative pressure source prior to extubation and to inject a small amount of saline for flushing in order to dilute and clear the residual gastric fluid. However, this conventional method has significant limitations in that, firstly, it adds to the procedure steps, which are cumbersome in an urgent or busy clinical setting, and, secondly, the flushing procedure itself may cause leakage of gastrointestinal fluids due to separation of the junctions, contaminating the bed units and increasing the risk of cross-infection. Based on this, a gastrointestinal fluid pressure reducing device for gastrointestinal surgery is proposed. Disclosure of Invention In order to solve the problems in the prior art, the invention provides a gastrointestinal fluid decompression device for gastrointestinal surgery. The aim of the invention can be achieved by the following technical scheme: The invention discloses a gastrointestinal fluid pressure reducing device for gastrointestinal surgery, which comprises a shell, a negative pressure component, a cleaning component and a switching mechanism, wherein an interface is arranged on the shell, the switching mechanism is arranged in the shell, the negative pressure component and the cleaning component are symmetrically arranged on the switching mechanism based on the center of the shell, and the switching mechanism drives the negative pressure component and the cleaning component to be respectively in butt joint with the interface in a negative pressure mode and a cleaning mode and respectively form negative pressure and release cleaning fluid in a pipeline connected with the interface. As a further scheme of the invention, the negative pressure component is a negative pressure vortex pump, the cleaning component is an infusion screw pump, the switching mechanism comprises a toothed ring and a motor, the toothed ring is rotatably arranged in the shell, a transmission gear is arranged on an output shaft of the motor and meshed with the outer side of the toothed ring, the inner side of the toothed ring is meshed with a rotating shaft of the negative press