CN115721801B

CN115721801B - Coronary perfusion operation device

Info

Publication number: CN115721801B
Application number: CN202310025052.3A
Authority: CN
Inventors: 刘文超; 邓卿; 孙晓刚; 王杨; 李卫
Original assignee: Fuwai Hospital of CAMS and PUMC
Current assignee: Fuwai Hospital of CAMS and PUMC
Priority date: 2023-01-09
Filing date: 2023-01-09
Publication date: 2023-04-28
Anticipated expiration: 2043-01-09
Also published as: CN115721801A

Abstract

The invention discloses a coronary perfusion operation device, which comprises a bearing part, wherein a first connecting port for connecting an extracorporeal circulation machine and a second connecting port of a coronary perfusion tube are arranged outside the bearing part, and a passage of the connecting port is arranged inside the bearing part; the rear end of the pressure regulating part is fixedly connected with the front end of the bearing part; the pressure regulating part comprises a pressure regulator, a liquid passage, a constant pressure device and a conductor; the conductor is inserted into the liquid passage; the pressure provided by the pressure regulator, the pressure provided by the pressure stabilizer and the pressure at the outlet of the liquid passage act on the conductor together to control the conductor to slide in the liquid passage and regulate the flow of the liquid passage, so that the pressure at the outlet of the liquid passage is kept constant. And the pressure measuring structure is used for measuring the pressure of the outlet of the liquid passage. Setting a pressure measuring structure, and measuring the pressure of an outlet of the liquid passage, namely the numerical value of the perfusion pressure in real time; and a pressure regulating part is arranged for regulating the flow rate of the liquid passage according to the pressure of the outlet of the liquid passage and keeping the pressure of the outlet of the liquid passage constant.

Description

Coronary perfusion operation device

Technical Field

The invention belongs to the technical field of medical appliances, and particularly relates to a coronary perfusion operation device.

Background

Before heart operation, the heart is usually stopped by adopting the heart perfusion stopping fluid, and the common operation is that a connecting pipe is used for connecting the coronary artery of a patient with an extracorporeal circulation machine, so that the ascending aorta of the heart is directly perfused. This coronary perfusion has the following disadvantages:

1. the real-time perfusion pressure cannot be measured, and the numerical range of the perfusion pressure can be deduced only through the parameters of the extracorporeal circulation machine;

2. because the coronary artery of the patient is connected with the extracorporeal circulation machine by adopting the connecting pipe, when the perfusion pressure is too high, the blood pressure cannot be reduced in time, and the vascular injury of the patient is easily caused.

The present invention addresses the above-described problems by providing a coronary perfusion operation device.

Disclosure of Invention

In order to overcome the problems presented in the background art, the present invention provides a coronary perfusion operation device.

A coronary perfusion operation device, comprising

The bearing part is externally provided with a first connecting port for connecting an extracorporeal circulation machine and a second connecting port of a coronary perfusion tube, and is internally provided with a passage for connecting the ports;

the pressure regulating part is fixedly connected with the bearing part; the pressure regulating part comprises a pressure regulator, a liquid passage, a constant pressure device and a conductor; the conductor is inserted into the interior of the liquid passage; the pressure provided by the pressure regulator, the pressure provided by the pressure stabilizer and the pressure at the outlet of the liquid passage act on the conductor together to control the conductor to slide in the liquid passage and regulate the flow of the liquid passage, so that the pressure at the outlet of the liquid passage is kept constant.

And the pressure measuring structure is inserted into the bearing part and then enters the passage for measuring the pressure of the outlet of the liquid passage.

Further, the front end of the conductor is contacted with the voltage regulator, and the rear end of the conductor is contacted with the constant voltage regulator; the side wall of the outlet of the liquid passage is contacted with the rear end of the pressure regulator; when the pressure provided by the constant pressure device and the pressure provided by the outlet of the liquid passage are greater than the pressure provided by the pressure regulator, the flow of the liquid passage is compressed by the conductor, and the pressure at the outlet of the liquid passage is reduced; when the pressure provided by the constant pressure device and the pressure provided by the outlet of the liquid passage are smaller than the pressure provided by the pressure regulator, the flow of the liquid passage is increased by the conductor, and the pressure at the outlet of the liquid passage is improved.

Further, the liquid passage comprises a liquid inlet tank, a liquid inlet passage, a sliding tank, a liquid outlet passage and a liquid outlet tank; the liquid inlet tank is connected with the first connecting port through a passage; the liquid outlet cabin is connected with the second connecting port through a passage; the blood received by the first connecting port sequentially passes through the liquid inlet tank, the liquid inlet passage, the sliding tank, the liquid outlet passage and the liquid outlet tank and then enters the coronary perfusion tube through the second connecting port along the passage.

Further, the sliding cabin is in sliding connection with the conductor.

Further, the liquid passage also comprises a synchronizing pipe which guides the liquid out of the tank to the rear end of the pressure regulator.

Further, the pressure regulator comprises a tympanic membrane, a pressure cabin, a regulator, a sliding part, a pressure regulating spring and a pressure plate; the pressure cabin and the bearing part body are fixed at the front end of the bearing part; the tympanic membrane is arranged between the pressure cabin and the bearing part; the sliding part, the pressure regulating spring and the pressure plate are all arranged in the pressure cabin; the rear end of the regulator is inserted into the pressure cabin through the front end of the pressure cabin;

further, one end of the pressure regulating spring is connected with the sliding part, and the other end of the pressure regulating spring is connected with the pressure plate; one end of the sliding part, which is far away from the pressure regulating spring, is connected with the regulator; one end of the pressure plate, which is far away from the pressure regulating spring, is connected with the tympanic membrane;

further, the constant pressure device comprises an elastic cabin, a thruster and a thrust spring; the thrust spring is arranged in the elastic cabin; the rear end of the thrust spring is connected with the inner bottom surface of the thrust cabin, and the other end of the thrust spring is connected with the thruster; the front end of the thruster is contacted with the rear end of the conductor;

the invention has the beneficial effects that: setting a pressure measuring structure, and measuring the pressure of an outlet of the liquid passage, namely the pressure of blood discharged by the device, namely the numerical value of perfusion pressure in real time; the pressure regulating part is arranged for regulating the flow of the liquid passage according to the pressure of the outlet of the liquid passage, and when the pressure provided by the pressure regulator and the pressure provided by the outlet of the liquid passage are greater than the pressure provided by the pressure regulator, the flow of the liquid passage is compressed by the conductor, and the pressure of the outlet of the liquid passage is reduced; when the pressure provided by the constant pressure device and the pressure provided by the liquid passage outlet are smaller than the pressure provided by the pressure regulator, the flow of the liquid passage is increased by the conductor, and the pressure at the liquid passage outlet is improved; thereby maintaining the pressure at the outlet of the liquid passage constant.

Drawings

FIG. 1 is a schematic view of a coronary perfusion operation device embodying the present invention;

FIG. 2 is a front view of a coronary perfusion operation device embodying the present invention;

FIG. 3 is a cross-sectional view taken along A-A of FIG. 2;

FIG. 4 is a B-B cross-sectional view of FIG. 2;

FIG. 5 is a partial cross-sectional view of a coronary perfusion operation device embodying the present invention;

FIG. 6 is a schematic view of a structure of a discharge portion embodying the present invention;

fig. 7 is a front view of a discharge portion embodying the present invention;

FIG. 8 is a C-C cross-sectional view of FIG. 7;

FIG. 9 is a D-D sectional view of FIG. 7;

FIG. 10 is a schematic view of a construction of a drain button embodying the present invention;

FIG. 11 is a schematic diagram of a three-way valve embodying the present invention;

FIG. 12 is a front view of a three-way valve embodying the present invention;

FIG. 13 is an E-E cross-sectional view of FIG. 12;

FIG. 14 is a cross-sectional view taken in the F-F direction of FIG. 12;

FIG. 15 is an internal schematic diagram of a three-way valve embodying the present invention;

in the figure, 1, a bearing part; 11. a main body; 12. a pressure measuring structure; 13. a first connection port; 14. a communicating pipe; 15. a liquid outlet pipe; 16. a liquid inlet pipe; 2. a pressure regulating part; 201. a pressure regulating housing; 202. feeding a liquid tank; 203. discharging the liquid tank; 204. an elastic cabin; 205. a thruster; 206. a thrust spring; 207. a conductor; 208. a tympanic membrane; 209. a pressure chamber; 210. a regulator; 211. a sliding part; 212. a pressure regulating spring; 213. a pressure plate; 214. a synchronization pipe; 215. a sliding cabin; 216. a liquid inlet passage; 217. a liquid outlet passage; 218. a vent hole; 3. a discharge section; 31. a connecting pipe; 32. a fixed button; 321. a fixed wrench; 322. a fixed cabin; 33. a discharge button; 331. an adjustable wrench; 332. a flow stopper; 34. a drain port; 4. a three-way valve; 41. an input end; 42. a coronary perfusion tube; 43. adjusting a wrench; 431. a dial end; 432. a current breaker; 433. a first stopper; 44. an auxiliary output end; 45. a buffer compartment; 46. and (5) sealing the cap.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The invention may be embodied or practiced in other different specific embodiments and features from the following examples and examples may be combined with one another without departing from the spirit or scope of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be understood that the terms "length," "upper," "lower," "front," "rear," "top," "bottom," "inner," "outer," "counterclockwise," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Example 1

A coronary perfusion operation device as shown in figures 1-5, comprising

The bearing part 1 is externally provided with a first connecting port 13 for connecting an extracorporeal circulation machine and a second connecting port of the coronary perfusion tube 42, and is internally provided with a passage of the connecting port;

the pressure regulating part 2, the pressure regulating part 2 is fixedly connected with the bearing part 1; the pressure regulating part 2 comprises a pressure regulator, a liquid passage, a constant pressure device and a conductor 207; the conductor 207 is inserted into the inside of the liquid passage; the pressure provided by the pressure regulator, the pressure provided by the pressure stabilizer and the pressure at the outlet of the liquid passage act on the conductor 207 together, so that the conductor 207 is controlled to slide in the liquid passage to regulate the flow of the liquid passage, and the pressure at the outlet of the liquid passage is kept constant.

The pressure measuring structure 12 is inserted into the interior of the carrier part 1 and then enters the passage for measuring the pressure at the outlet of the liquid passage. Specifically, the pressure measurement structure 12 is a hydraulic gauge.

The front end of the conductor 207 is in contact with the voltage regulator, and the rear end is in contact with the constant voltage regulator; the side wall of the outlet of the liquid passage is contacted with the rear end of the pressure regulator; the stator pushes the transducer 207 from the rear end of the transducer 207 towards the tendency to close the liquid path; the pressure regulator pushes the transducer 207 from the front end of the transducer 207 towards the tendency to open the fluid path; blood contacts the back end of the pressure regulator via the side wall of the outlet of the liquid passage, pushing the pressure regulator in the opposite direction, reducing the pressure of the pressure regulator to the transducer 207.

When the pressure provided by the constant pressure device and the pressure provided by the liquid passage outlet are greater than the pressure provided by the pressure regulator, the flow rate of the liquid passage is compressed by the conductor 207, and the pressure at the liquid passage outlet is reduced; when the pressure provided by the pressure regulator and the pressure at the outlet of the liquid passage are smaller than the pressure provided by the pressure regulator, the flow rate of the liquid passage is increased by the conductor 207, and the pressure at the outlet of the liquid passage is increased. The difference between the pressure regulator and the pressure regulator is the pressure at the outlet of the fluid passageway, i.e., the perfusion pressure to the patient's coronary.

Specifically, the carrying part 1 includes a main body 11, a first connection port 13 for connecting an extracorporeal circulation machine and a second connection port of a coronary perfusion tube 42 are provided outside the main body 11, and a passage of the connection ports is provided inside the main body.

As shown in fig. 3-5, the passage inside the bearing part 1 comprises a communicating pipe 14, a liquid outlet pipe 15 and a liquid inlet pipe 16; one end of the liquid inlet pipe 16 is connected with the communicating pipe 14, and the other end is connected with the first connecting port 13; the end of the communicating tube 14 remote from the liquid inlet tube 16 is connected to a liquid passage, and the end of the liquid passage remote from the communicating tube 14 is communicated with the second connection port through the liquid outlet tube 15. The second connection port is located at the end of the outlet pipe 15. The communicating pipe 14, the liquid outlet pipe 15 and the liquid inlet pipe 16 are all arranged in the bearing part 1, and the pipe walls of the communicating pipe 14, the liquid outlet pipe 15 and the liquid inlet pipe 16 are integrally connected with the bearing part 1, so that the corresponding pore canal is arranged in the bearing part 1. The first connection port 13 is provided at an end of the liquid inlet pipe 16 remote from the communication pipe 14.

The blood provided by the extracorporeal circulation machine sequentially passes through the first connection port 13, the liquid inlet pipe 16, the communicating pipe 14, the liquid passage and the liquid outlet pipe 15 to reach the second connection port, and then enters the patient through the coronary perfusion pipe 42.

Specifically, the pressure measuring structure 12 is disposed on a side wall of the liquid outlet pipe 15, and the pressure measuring structure 12 measures the pressure of the liquid outlet pipe 15, and the internal diameters of the coronary perfusion pipe 42 and the liquid outlet pipe 15 are equal, so that the pressure inside the coronary perfusion pipe 42 and the liquid outlet pipe 15 is equal.

Specifically, the liquid inlet pipe 16 and the first connection port 13 are on the same straight line, and the communication pipe 14 is perpendicular to the liquid inlet pipe 16. The liquid outlet pipe 15 is parallel to the liquid inlet pipe 16.

As shown in fig. 3-5, the liquid passages include a liquid inlet tank 202, a liquid inlet passage 216, a sliding tank 215, a liquid outlet passage 217, and a liquid outlet tank 203; the liquid inlet tank 202 is connected with the first connecting port 13 through a passage; the liquid outlet tank 203 is connected with the second connecting port through a passage; the blood received by the first connection port 13 passes through the liquid inlet tank 202, the liquid inlet passage 216, the sliding tank 215, the liquid outlet passage 217 and the liquid outlet tank 203 in sequence, and then enters the coronary perfusion tube 42 through the second connection port along the passages. The conductor 207 is slidably coupled to the sliding compartment 215. The liquid path further comprises a synchronization pipe 214, which synchronization pipe 214 guides the liquid exiting the tank 203 into the rear end of the pressure regulator.

The liquid inlet tank 202 is communicated with the communicating pipe 14; the liquid outlet tank 203 is communicated with the liquid outlet pipe 15, blood provided by the extracorporeal circulation machine sequentially enters the liquid inlet tank 202 through the first connecting port 13, the liquid inlet pipe 16 and the communicating pipe 14, then sequentially enters the liquid outlet pipe 15 after passing through the liquid inlet passage 216, the sliding cabin 215, the liquid outlet passage 217 and the liquid outlet tank 203, and finally enters a patient through the second connecting port and the coronary perfusion pipe 42.

As shown in fig. 3-5, the pressure regulator includes a tympanic membrane 208, a pressure compartment 209, a regulator 210, a slider 211, a pressure regulating spring 212, and a pressure plate 213; the pressure chamber 209 is separated from the bearing part 1 and is fixed at the front end of the bearing part 1; the tympanic membrane 208 is arranged between the pressure compartment 209 and the carrier 1; the sliding part 211, the pressure regulating spring 212 and the pressure plate 213 are all arranged inside the pressure chamber 209; the rear end of the regulator 210 is inserted into the pressure chamber 209 through the front end of the pressure chamber 209. The pressure plate 213 is slidably disposed within the pressure chamber 209. One end of the pressure regulating spring 212 is connected to the sliding portion 211, and the other end is connected to the pressure plate 213; one end of the sliding part 211, which is far away from the pressure regulating spring 212, is connected with the regulator 210; the end of pressure plate 213 remote from pressure regulating spring 212 is connected to tympanic membrane 208.

Specifically, the regulator 210 is screwed to the top of the pressure chamber 209, the regulator 210 is rotated, the bottom of the regulator 210 gradually enters the pressure chamber 209, the regulator 210 abuts against the sliding portion 211, the pressure regulating spring 212 is compressed to provide pressure to the outside, and the pressure acts on the transducer 207 through the pressure plate 213 and the tympanic membrane 208.

Blood exiting tank 203 presses against tympanic membrane 208 via synchronization tube 214, pushing pressure plate 213 in a reverse direction, counteracting the pressure provided by a portion of pressure regulating spring 212, thereby reducing the pressure of pressure regulator to transducer 207.

Preferably, the projected areas of both the transducer 207 and the sliding chamber 215 on the pressure plate 213 are smaller than the end surface area of the pressure plate 213, so that the pressure plate 213 cannot enter the sliding chamber 215. If the pressure plate 213 can enter the sliding cabin 215, the pressure transmitted by the pressure plate 213 pulls the tympanic membrane 208, the tympanic membrane 208 is easily ruptured during use, and the blood in the liquid outlet cabin 203 flows into the pressure cabin 209 through the ruptured tympanic membrane 208 and then flows out through the slit of the pressure cabin 209, which also causes the back flow of the blood that has entered the patient, and damages the life of the patient.

Preferably, the pressure chamber 209 is fastened to the carrier 1 by bolts; the front-back split type design, when the inside spare part of pressure regulating portion 2 damages, convenient to detach and change damage part reduces cost of maintenance.

Preferably, a sealing ring is arranged between the pressure chamber 209 and the bearing part 1; the liquid at the bottom of the pressure regulating part 2 is prevented from flowing out through the gap between the pressure cabin 209 and the bearing part 1 to pollute the operating room.

Preferably, the pressure regulating spring 212 is a linear compression spring, the regulator 210 is rotated, the regulator 210 pushes the sliding portion 211 to compress the pressure regulating spring 212, and the linear compression spring is compressed to provide pressure to the outside, and the pressure acts on the transducer 207 through the pressure plate 213 and the tympanic membrane 208.

Preferably, in order to prevent the air tightness in the pressure chamber 209 from being too strong, so that the air in the pressure chamber also generates pressure on the tympanic membrane 208, the pressing transmitter 207 moves in the sliding chamber 215, which results in unstable pressure of the liquid discharged from the pressure regulating part 2, and a vent hole 218 is arranged on the side wall of the pressure chamber 209; the vent 218 breaks the tightness of the pressure chamber 209 preventing the gas from being compressed and no additional pressure is exerted on the tympanic membrane 208. Specifically, the vent holes 218 are regular through holes.

As shown in fig. 3-5, the constant pressure device comprises an elastic cabin 204, a thruster 205 and a thrust spring 206; the thrust spring 206 is disposed inside the spring compartment 204; the rear end of the thrust spring 206 is connected with the inner bottom surface of the thrust cabin, and the other end is connected with the thruster 205; the front end of the pusher 205 is in contact with the rear end of the conductor 207.

The pressure of the constant pressure device is provided entirely by the thrust spring 206.

The elastic cabin 204 and the thruster 205 are both in a circular barrel-shaped structure; the outer diameter of the thruster 205 is smaller than the inner diameter of the nacelle 204; the thruster 205 is disposed inside the nacelle 204, and the thruster and the nacelle are slidingly connected with each other with the opening facing each other. The length of the thrust spring 206 is less than the sum of the depths of the pod 204 and the thrusters 205, preventing the thrusters 205 from being disengaged from the pod 204 under the drive of the thrust spring 206. If the thrusters 205 are extended out of the nacelle 204 under the urging of the thrust springs 206, the thrusters 205 can also be returned to the inside of the nacelle 204 with the help of their own structure.

Preferably, the thrust spring 206 is a linear compression spring.

Example 2

As shown in fig. 1 to 10, this embodiment is different from embodiment 1 in that:

a discharge part 3 is arranged outside the bearing part 1, and the discharge part 3 is communicated with the liquid passage through the passage; when the pressure regulating part 2 cannot regulate the pressure to cause the filling pressure to be too high, the discharging part 3 is opened, and part of liquid is discharged to reduce the pressure.

The drain portion 3 includes a connection pipe 31, a fixing knob 32, a drain knob 33, and a drain port 34; one end of the connecting tube 31 is connected to the liquid passage through the passage in the bearing part 1, and the other end is connected to the fixing button 32; one end of the fixed button 32, which is far away from the connecting pipe 31, is communicated with the liquid discharge port 34; the drain button 33 is inserted into the inside of the fixed button 32, and the drain button 33 is rotatably connected with the fixed button 32.

One end of the communication pipe 14 is communicated with the liquid inlet tank 202, the other end is communicated with the discharge part 3, and the middle part is communicated with the liquid inlet pipe 16.

Specifically, the fixing button 32 includes a fixing wrench 321 and a fixing compartment 322; the fixed spanner 321 is arranged at the front end of the fixed cabin 322, and the fixed spanner 321 is integrally connected with the fixed cabin 322. The fixed cabin 322 is respectively communicated with the connecting pipe 31 and the liquid discharge port 34; the discharge button 33 includes a spanner wrench 331 and a stopper 332, and the spanner wrench 331 is fixedly connected to the stopper 332. The stopper 332 is disposed inside the fixed compartment 322, and the adjustable wrench 331 is disposed outside the fixed compartment 322; the adjustable wrench 331 controls the stopper 332 to rotate inside the fixed compartment 322.

Specifically, as shown in fig. 10, the flow stopper 332 has a columnar structure with regular through holes on the side wall. The stopper 332 is closed at one end to the connection pipe 31 and at the other end to the drain port 34 in a normal state. When in use, the adjustable wrench 331 is rotated to drive the flow stop 332 to rotate, the connecting pipe 31 and the liquid discharge port 34 are not blocked, and blood enters the fixed cabin 322 from the connecting pipe 31 and flows into the liquid discharge port 34 through the regular through holes on the flow stop 332, so that the flow stop 332 is unblocked. At this time, the blood in the communication tube 14, the liquid inlet tube 16, and the liquid inlet tank 202 flows out through the stopper 332, and the pressure is released.

Preferably, to prevent contamination, a sealing structure is provided at the end of the drain port 34 remote from the fixed knob 32. When the discharge part 3 is not needed, a sealing structure is used for sealing the liquid discharge port 34; when the drain 3 is required, the seal is removed from the drain port 34.

Example 3

This example was further modified on the basis of example 2:

a torsion spring is provided in the discharge portion 3, and one end of the torsion spring is connected to the fixed wrench 321 and the other end is connected to the adjustable wrench 331. The torsion spring adds a reset function for the discharge part 3, presses the torsion spring when the adjustable wrench 331 is rotated towards the fixed wrench 321, pushes the adjustable wrench 331 to reset when the adjustable wrench 331 is loosened, drives the flow stopper 332 to reset, and cuts off the discharge part 3.

Further, in order to prevent the adjustable wrench 331 from rotating too much under the pushing of the torsion spring, the stopper 332 is biased, and the connection tube 31 and the drain port 34 cannot be blocked. A limiting structure is arranged on one side of the fixed cabin 322, facing the adjustable wrench 331, and the torsion spring extrudes the adjustable wrench 331 on the side wall of the limiting structure, so that the flow stopper 332 can just block the connecting pipe 31 and the liquid discharge port 34.

Example 4

As shown in fig. 1 to 5 and 11 to 15, this embodiment is different from

embodiments

1 and 2 in that:

a three-way valve 4 is arranged between the coronary perfusion tube 42 and the second connecting port; the three-way valve 4 comprises an input end 41, a main output end, an adjusting spanner 43, an auxiliary output end 44 and a buffer cabin 45; the side wall of the buffer cabin 45 is communicated with the input end 41, the main output end and the auxiliary output end 44 respectively; the adjusting spanner 43 is inserted into the buffer compartment 45 and is rotatably connected with the buffer compartment 45. The end of the input end 41 remote from the buffer compartment 45 is connected to the second connection port. The end of the main output end far away from the buffer compartment 45 is communicated with the coronary perfusion tube 42.

As shown in fig. 11-15, the adjustment wrench 43 includes a pulling end 431 and a cutout 432; the poking end 431 is fixedly connected with the current breaker 432; the poking end 431 is provided outside the buffer compartment 45, and the cutout 432 is provided inside the buffer compartment 45. A first stop 433 is provided inside the cutout 432. As can be seen from fig. 12-14, the three-way valve 4 in the closed state shown in fig. 15, the first stopper 433 blocks the input end 41, and the pulling end 431 is directed to the input end 41. The adjusting wrench 43 is rotated anticlockwise, so that the poking end 431 points to the auxiliary output end 44, the first stop block 433 seals the auxiliary output end 44, blood flows out of the second connecting port and sequentially enters the coronary perfusion tube 42 through the input end 41, the buffer cabin 45 and the main output end. The adjusting wrench 43 is rotated counterclockwise again, so that the pulling end 431 is directed to the main output end, the first stopper 433 blocks the main output end, and blood flows out of the three-way valve 4 from the second connection port and flows out of the auxiliary output end 44. The adjusting wrench 43 is rotated counterclockwise again, so that the pulling end 431 is directed to the opposite direction of the auxiliary output end 44, and at this time, the three-way valve 4 is completely penetrated, and blood flows out of the three-way valve 4 from the second connection port, and flows out of the main output end and the auxiliary output end 44, respectively.

Example 5

This example was further modified on the basis of example 4:

the three-way valve 4 further comprises a sealing cap 46; the sealing cap 46 is disposed at an end of the sub output port 44 away from the buffer chamber 45, and the sealing cap 46 is detachably connected with the sub output port 44 to prevent external dust from contaminating the three-way valve 4.

In some embodiments of the present application, the three-way valve 4 may be used for negative pressure aspiration, to empty the surgical field of view, and to reduce the blood effects during surgery, in the following manner:

1. the adjustment wrench 43 is turned to a state shown in fig. 15, and the first stopper 433 is caused to block the input port 41.

2. Removing the sealing cap 46 and connecting the negative pressure suction device with the auxiliary output end 44;

3. the negative pressure suction is started, and blood in the coronary artery of the patient sequentially enters the negative pressure suction machine through the coronary artery perfusion tube 42, the buffer cabin 45 and the auxiliary output end 44.

In some embodiments of the present application, the end of the coronary perfusion tube 42 away from the three-way valve 4 is provided with a side hole, so that not only the blood at the front end of the coronary perfusion tube 42 but also the blood at the side of the coronary perfusion tube 42 can be sucked away during negative pressure suction, and the negative pressure suction operation can more thoroughly empty the surgical field.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A coronary perfusion operation device, which is characterized by comprising

The bearing part is provided with a first connecting port for connecting an extracorporeal circulation machine and a second connecting port of a coronary perfusion tube at the outer side, and a passage for connecting the ports is arranged in the bearing part;

the pressure regulating part is fixedly connected with the bearing part; the pressure regulating part comprises a pressure regulator, a liquid passage, a constant pressure device and a conductor; the conductor is inserted into the interior of the liquid passage; the pressure provided by the pressure regulator, the pressure provided by the pressure stabilizer and the pressure at the outlet of the liquid passage act on the conductor together, the conductor is controlled to slide in the liquid passage, and the flow of the liquid passage is regulated, so that the pressure at the outlet of the liquid passage is kept constant; the front end of the conductor is contacted with the voltage regulator, and the rear end is contacted with the constant voltage regulator; the side wall of the outlet of the liquid passage is contacted with the rear end of the pressure regulator; when the pressure provided by the constant pressure device and the pressure provided by the outlet of the liquid passage are greater than the pressure provided by the pressure regulator, the flow of the liquid passage is compressed by the conductor, and the pressure at the outlet of the liquid passage is reduced; when the pressure provided by the constant pressure device and the pressure provided by the liquid passage outlet are smaller than the pressure provided by the pressure regulator, the flow rate of the liquid passage is increased by the conductor, and the pressure at the liquid passage outlet is improved; the liquid passage comprises a liquid inlet tank, a liquid inlet passage, a sliding tank, a liquid outlet passage and a liquid outlet tank; the liquid inlet tank is connected with the first connecting port through a passage; the liquid outlet cabin is connected with the second connecting port through a passage; the blood received by the first connecting port sequentially passes through the liquid inlet tank, the liquid inlet passage, the sliding tank, the liquid outlet passage and the liquid outlet tank and then enters the coronary perfusion tube through the second connecting port along the passage; the conductor is connected to the sliding cabin in a sliding manner; the liquid passage also comprises a synchronous pipe, and the synchronous pipe guides the liquid out of the liquid tank to the rear end of the pressure regulator;

and one end of the pressure measuring structure is inserted into the bearing part and then enters the passage for measuring the pressure of the outlet of the liquid passage.

2. The coronary perfusion operation device of claim 1, wherein the pressure regulator includes a tympanic membrane, a pressure compartment, a regulator, a slider, a pressure regulating spring, a pressure plate; the pressure cabin and the bearing part body are fixed at the front end of the bearing part; the tympanic membrane is arranged between the pressure cabin and the bearing part; the sliding part, the pressure regulating spring and the pressure plate are all arranged in the pressure cabin; the rear end of the regulator is inserted into the pressure chamber through the front end of the pressure chamber.

3. The coronary perfusion operation device according to claim 2, wherein one end of the pressure regulating spring is connected to the sliding portion, and the other end is connected to the pressure plate; one end of the sliding part, which is far away from the pressure regulating spring, is connected with the regulator; one end of the pressure plate, which is far away from the pressure regulating spring, is connected with the tympanic membrane.

4. The coronary perfusion operation device according to claim 1, wherein the constant pressure device comprises an elastic cabin, a thruster and a thrust spring; the thrust spring is arranged in the elastic cabin; the rear end of the thrust spring is connected with the inner bottom surface of the thrust cabin, and the other end of the thrust spring is connected with the thruster; the front end of the thruster is in contact with the rear end of the conductor.

5. The coronary perfusion operation device according to claim 1, wherein a discharge portion is provided outside the bearing portion, the discharge portion being communicated with the liquid passage through the passage; the pressure regulating part can not regulate the pressure, so that the discharging part is opened when the filling pressure is too high, and the pressure of the liquid in the discharging part is reduced.

6. A coronary perfusion operation device according to claim 1, wherein a three-way valve is provided between the coronary perfusion tube and the second connection port; the three-way valve comprises an input end, a main output end, an adjusting spanner, an auxiliary output end and a buffer cabin; the side wall of the buffer cabin is respectively communicated with the input end, the main output end and the auxiliary output end; the adjusting spanner is inserted into the buffer cabin and is rotationally connected with the buffer cabin.