Abdominal surgical operation aspirator

Abstract

The invention relates to the technical field of medical instruments, and discloses an abdominal surgery aspirator which comprises a buffering movable pressure control mechanism. A cylindrical hollow cylinder which is fixedly mounted in the fixed ring opening and is hollow inside is arranged in the fixed ring opening; the top of the first annular elastic gas film is fixedly embedded into the top of an inner cavity of the cylindrical hollow barrel, and ascites can flow along an inner hole; and the inner limiting movable plate is fixedly mounted at the bottom of the first annular elastic gas film and can move in the axial direction of the cylindrical hollow barrel. The abdominal surgery aspirator is used in cooperation with a medical infusion pump, the function of negative pressure suction of accumulated water in the abdominal cavity can be achieved, in the negative pressure suction process, the instrument can achieve the pressure control and buffering effects on negative pressure generated by gas through the gravity of an object and the elasticity of an annular elastic gas film, and once the negative pressure suction force is too large, the negative pressure can be effectively controlled. According to the instrument, the phenomenon that the inner diameter is closed can occur in time, and therefore complications such as tissue damage and bleeding in the abdominal cavity caused by too large negative pressure are prevented from occurring.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to an abdominal surgical suction device. Background Art

[0002] Currently, existing abdominal surgeries on the market usually use a drainage tube plus a drainage bag after surgery to guide the accumulated fluid in the abdominal cavity into the drainage bag through the drainage tube, thereby removing the accumulated fluid from the body.

[0003] For example, a Chinese patent with publication number "CN119075041A" discloses "A suction device for abdominal surgery," the main structure of which includes an outer frame body, the outer wall of which is mounted with two cylinders, the output ends of the two cylinders being rotatably provided with a first transmission gear, one end of the first transmission gear being rotatably provided with a first fixed frame, the outer wall of the first fixed frame being fixedly connected to a first transverse tube, one end of the first transverse tube being fixedly connected to a first suction cup. In this abdominal surgical suction device, the first suction cups on both sides will pull the outer walls of the cavity fluid drainage bag in opposite directions, causing the two sides of the cavity fluid drainage bag to separate, and during the separation process, the space inside the cavity fluid drainage bag will continue to increase, and the negative pressure inside the cavity fluid drainage bag will also increase accordingly. The negative pressure inside the cavity fluid drainage bag can help the accumulated fluid in the drainage tube to enter the cavity fluid drainage bag more smoothly.

[0004] However, during the actual operation, since the suction force is generated by pulling the drainage bag with a suction cup, the suction force generated by the drainage bag due to deformation will be unstable, and the above-mentioned abdominal surgical suction device does not take effective measures to control the size of the suction force. When the ascites is discharged by negative pressure suction, if the negative pressure suction is not performed properly, it may cause complications such as intra-abdominal tissue damage and bleeding due to excessive negative pressure. Therefore, the safety risks of the above-mentioned abdominal surgical suction device are relatively large. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides an abdominal surgical suction device, which is used in conjunction with a medical suction pump to perform negative pressure suction on the accumulated water in the abdominal cavity. During the negative pressure suction process, the instrument uses the gravity of the object and the elasticity of the annular elastic air film to control the negative pressure generated by the gas and provide a buffering effect. Once the negative pressure suction force is too large, the instrument can close the inner diameter in time, thereby preventing the occurrence of complications such as intra-abdominal tissue damage and bleeding due to excessive negative pressure, thereby solving the above-mentioned technical problems.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an abdominal surgical suction device, comprising a fixed ring seat with a fixed ring opening in the center, longitudinal legs fixedly installed at the bottom of the fixed ring seat and having a supporting effect, and a bottom mounting plate fixedly installed at the bottom end of the longitudinal legs and capable of being fixedly installed in the working area, and also comprising a buffered movable pressure control mechanism, the interior of which is provided with a cylindrical hollow cylinder fixedly installed in the fixed ring opening and hollow inside, a No. 1 annular elastic air membrane whose top is fixedly embedded in the top of the inner cavity of the cylindrical hollow cylinder and along which ascites can flow, and an inner limit movable plate fixedly installed at the bottom of the No. 1 annular elastic air membrane and capable of moving axially along the cylindrical hollow cylinder.

[0007] Preferably, the buffer movable pressure control mechanism includes a cylindrical hollow cylinder and an inner limit movable plate, the interior of the cylindrical hollow cylinder is provided with a longitudinal component movable cavity, the top and bottom ends of the cylindrical hollow cylinder are respectively provided with an upper pipeline docking channel and a lower pipeline docking channel with an integral structure therewith, the cylindrical hollow cylinder is provided with an upper medium flow channel with an integral structure therewith and an inner hole connected to the inner hole of the upper pipeline docking channel at the top end of the longitudinal component movable cavity, the cylindrical hollow cylinder is provided with a lower medium flow channel with an integral structure therewith and an inner hole connected to the inner hole of the lower pipeline docking channel at the bottom end of the longitudinal component movable cavity Medium flow channel, the bottom end of the cylindrical hollow cylinder is provided with a rod through-hole connecting the space below it and the bottom end of the movable cavity of the longitudinal component, the center of the inner limit movable plate is provided with a central sleeve hole which is sleeved on the periphery of the lower medium flow channel and can move axially along the lower medium flow channel, a No. 1 annular elastic air film is embedded in a sealed edge-sealed manner between the bottom end of the upper medium flow channel and the top end of the inner limit movable plate, and the inner hole of the No. 1 annular elastic air film is connected with the inner holes of the upper medium flow channel and the lower medium flow channel, and the bottom end of the inner limit movable plate is provided with a rod fixing groove corresponding to the rod through-hole.

[0008] Preferably, the inner limit movable plate is embedded with an annular sealing ring on the inner wall of the circumference of the central sleeve hole, which can prevent the gas from flowing along the moving gap.

[0009] Preferably, the height of the No. 1 annular elastic air membrane is the same as the distance between the bottom end of the upper medium flow channel and the center height of the lower medium flow channel.

[0010] Preferably, it also includes a controllable load-bearing mechanism, which is internally provided with an annular hollow body located directly below the cylindrical hollow cylinder and capable of longitudinally moving with the inner limit movable plate, and a No. 2 annular elastic air membrane embedded in the outer circumference of the annular hollow body in a sealed manner and expanding toward the periphery after being subjected to fluid pressure, and an annular medium storage chamber arranged between the annular hollow body and the inner circumference of the No. 2 annular elastic air membrane and capable of storing flow to change the load-bearing force on the inner limit movable plate.

[0011] Preferably, the controllable load-bearing mechanism includes an annular hollow body with a central annular hole for connecting the pipe, the upper annular end of the annular hollow body is fixedly installed with a longitudinal limit link that passes through the rod body through-hole, and the top end of the longitudinal limit link is fixedly installed inside the rod body fixing groove, the interior of the annular hollow body is provided with an annular medium storage cavity with an open outer circumferential surface, the upper annular end of the annular hollow body is provided with a medium compensation channel that is connected to the annular medium storage cavity and has a liquid valve installed inside, the outer circumferential surface of the annular hollow body is sealed with a No. 2 annular elastic air membrane, and the circumferential inner wall of the No. 2 annular elastic air membrane and the annular medium storage cavity constitute a closed interval.

[0012] Preferably, the structural radius of the longitudinal limiting link is smaller than the structural radius of the rod body through hole.

[0013] Preferably, when the top end of the annular hollow body abuts against the bottom end of the cylindrical hollow cylinder, the top end of the inner limit movable plate is located below the top end of the lower medium flow channel.

[0014] Preferably, the No. 2 annular elastic air membrane and the No. 1 annular elastic air membrane are both made of rubber material with elastic extension effect.

[0015] Compared with the prior art, the present invention provides an abdominal surgical suction device with the following beneficial effects:

[0016] When used in conjunction with a medical suction pump, it can perform negative pressure suction on the accumulated water in the abdominal cavity. During the negative pressure suction process, the instrument uses the gravity of the object and the elasticity of the annular elastic air film to control and buffer the negative pressure generated by the gas. Once the negative pressure suction force is too large, the instrument can close the inner diameter in time, thereby preventing complications such as intra-abdominal tissue damage and bleeding due to excessive negative pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention;

[0018] Figure 2 is a three-dimensional cross-sectional view of the present invention;

[0019] Figure 3 It is a three-dimensional cross-sectional view of the buffer movable pressure control mechanism of the present invention;

[0020] Figure 4 A three-dimensional diagram of the inner limit movable plate and the first annular elastic air membrane in the present invention;

[0021] Figure 5 A three-dimensional diagram of the controllable load-bearing mechanism of the present invention;

[0022] Figure 6It is a three-dimensional cross-sectional view of the controllable load-bearing mechanism of the present invention.

[0023] Among them: 1. Fixed ring seat; 2. Fixed ring mouth; 3. Longitudinal support leg; 4. Bottom mounting plate; 5. Buffer movable pressure control mechanism; 51. Cylindrical hollow cylinder; 52. Longitudinal component movable cavity; 53. Upper pipe docking channel; 54. Lower pipe docking channel; 55. Upper medium flow channel; 56. Lower medium flow channel; 57. Rod body perforation; 58. Inner limit movable plate; 59. No. 1 annular elastic air film; 510. Center sleeve hole; 511. Annular sealing ring; 512. Rod body fixing groove; 6. Controllable load-bearing mechanism; 61. Annular hollow body; 62. Center ring hole; 63. Longitudinal limit connecting rod; 64. Annular medium storage cavity; 65. Medium compensation channel; 66. No. 2 annular elastic air film. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1 and Figure 2 A suction device for abdominal surgery includes a fixed ring seat 1 with a fixed ring mouth 2 in the center, a longitudinal support leg 3 fixedly installed at the bottom of the fixed ring seat 1 and playing a supporting role, and a bottom mounting plate 4 fixedly installed at the bottom end of the longitudinal support leg 3 and capable of being fixedly installed in the working area. The bottom mounting plate 4 is fixedly installed in the working position, and after being fixed, the longitudinal support leg 3 needs to be in a longitudinal position, and then the upper pipe docking channel 53 is docked with the liquid extraction port of the medical liquid extraction pump through the pipe, and finally the lower pipe docking channel 54 is docked with the liquid outlet of the puncture needle used to extract ascites.

[0026] In order to achieve the buffering and pressure control function of gas or liquid negative pressure, please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4, it is necessary to set up a buffer movable pressure control mechanism 5, which is provided with a cylindrical hollow cylinder 51 fixedly installed in the fixed ring mouth 2 and with a hollow interior, a No. 1 annular elastic air membrane 59 whose top is fixedly embedded in the top of the inner cavity of the cylindrical hollow cylinder 51 and along which ascites can flow, and an inner limit movable plate 58 fixedly installed at the bottom of the No. 1 annular elastic air membrane 59 and capable of axial movement along the cylindrical hollow cylinder 51. When the medical suction pump opens, the gas will flow into the medical suction pump along the inner holes in the puncture needle and the instrument. Finally, under the action of the negative pressure of the gas, the accumulated water will flow into the medical suction pump along the puncture needle, the lower pipeline docking channel 54, the inner hole of the lower medium flow channel 56, the inner hole of the No. 1 annular elastic air membrane 59, the inner hole of the upper medium flow channel 55 and the inner hole of the upper pipeline docking channel 53 in sequence. The inner hole of the No. 1 annular elastic air membrane 59 is completely closed. At this time, the negative pressure in the puncture needle cannot continue to increase, thereby achieving the buffering and pressure control functions of the gas or liquid negative pressure, and preventing the occurrence of complications such as intra-abdominal tissue damage and bleeding due to excessive negative pressure.

[0027] For the specific structure of the buffer movable pressure control mechanism 5, please refer to Figure 3 and Figure 4, including a cylindrical hollow cylinder 51 and an inner limiting movable plate 58, the interior of the cylindrical hollow cylinder 51 is provided with a longitudinal component movable cavity 52, the top and bottom ends of the cylindrical hollow cylinder 51 are respectively provided with an upper pipeline docking channel 53 and a lower pipeline docking channel 54 with an integral structure therewith, the cylindrical hollow cylinder 51 is provided with an upper medium flow channel 55 with an integral structure therewith and an inner hole communicating with the inner hole of the upper pipeline docking channel 53 at the top end of the longitudinal component movable cavity 52, the cylindrical hollow cylinder 51 is provided with a lower medium flow channel 56 with an integral structure therewith and an inner hole communicating with the inner hole of the lower pipeline docking channel 54 at the bottom end of the longitudinal component movable cavity 52, the bottom end of the cylindrical hollow cylinder 51 is provided with a rod through-hole 57 communicating with the space below it and the bottom end of the longitudinal component movable cavity 52, the center of the inner limiting movable plate 58 A central sleeve hole 510 is provided which is sleeved on the outer periphery of the lower medium flow channel 56 and can move axially along the lower medium flow channel 56. A No. 1 annular elastic air membrane 59 is embedded in a sealed edge-sealed manner between the bottom end of the upper medium flow channel 55 and the top end of the inner limit movable plate 58, and the inner hole of the No. 1 annular elastic air membrane 59 is connected to the inner holes of the upper medium flow channel 55 and the lower medium flow channel 56. The bottom end of the inner limit movable plate 58 is provided with a rod body fixing groove 512 corresponding to the rod body through-hole 57. The inner limit movable plate 58 is embedded with an annular sealing ring 511 on the circumferential inner wall of the central sleeve hole 510 to prevent gas from flowing along the moving gap. The height of the No. 1 annular elastic air membrane 59 is the same as the distance between the bottom end of the upper medium flow channel 55 and the center height of the lower medium flow channel 56.

[0028] In order to change the load-bearing strength of the inner limit movable plate 58, so as to adjust the negative pressure control strength according to the specific situation, please refer to Figure 1 、 Figure 2 、 Figure 5 and Figure 6 , it is necessary to set up a controllable load-bearing mechanism 6, which is provided with an annular hollow body 61 located just below the cylindrical hollow cylinder 51 and capable of longitudinally moving with the inner limit movable plate 58, and a second annular elastic air membrane 66 embedded in the outer circumference of the annular hollow body 61 and expanding toward the periphery after being subjected to fluid pressure, and an annular medium storage chamber 64 provided between the annular hollow body 61 and the inner circumference of the second annular elastic air membrane 66 and capable of storing flow to change the load-bearing force on the inner limit movable plate 58. The fluid is injected into the annular medium storage chamber 64 through the injection instrument. At this time, the sum of the gravity of the annular hollow body 61 and the fluid will increase, and the increased gravity is the total weight. The total weight will generate a greater load on the inner limit movable plate 58, thereby changing the load-bearing force of the inner limit movable plate 58. Through the above principle, medical staff can change the maximum negative pressure control intensity according to actual conditions.

[0029] For the specific structure of the controllable load-bearing mechanism 6, please refer to Figure 5 and Figure 6 , including an annular hollow body 61 with a central annular hole 62 for connecting a pipe, a longitudinal limit connecting rod 63 passing through the rod body through-hole 57 is fixedly installed on the upper annular end of the annular hollow body 61, and the top of the longitudinal limit connecting rod 63 is fixedly installed inside the rod body fixing groove 512, an annular medium storage cavity 64 with an open outer circumferential surface is provided inside the annular hollow body 61, and a medium compensation channel 65 communicating with the annular medium storage cavity 64 and having a liquid valve installed inside the upper annular end of the annular hollow body 61 is provided. The outer circumferential surface of 61 is embedded with a No. 2 annular elastic air membrane 66 in an edge-sealed manner, and the circumferential inner wall of the No. 2 annular elastic air membrane 66 and the annular medium storage chamber 64 constitute a closed area. The structural radius of the longitudinal limiting connecting rod 63 is smaller than the structural radius of the rod body through-hole 57. When the top end of the annular hollow body 61 abuts against the bottom end of the cylindrical hollow cylinder 51, the top end of the inner limiting movable plate 58 is located below the top end of the lower medium flow channel 56. The No. 2 annular elastic air membrane 66 and the No. 1 annular elastic air membrane 59 are both made of rubber material with elastic extension effect.

[0030] During use, the bottom mounting plate 4 is fixedly installed in the working position, and after being fixed, the longitudinal support legs 3 need to be in the longitudinal direction, and then the upper pipe docking channel 53 is docked with the liquid extraction port of the medical liquid extraction pump through the pipe, and finally the lower pipe docking channel 54 is docked with the liquid outlet of the puncture needle for extracting ascites, and the fluid is injected into the annular medium storage cavity 64 through the injection instrument. At this time, the sum of the gravity of the annular hollow body 61 and the fluid will increase, and the increased gravity is the total weight, which will produce a greater load on the inner limit movable plate 58. Medical staff can change the maximum negative pressure control intensity according to actual conditions. When the medical liquid extraction pump opens, the gas will flow along the puncture needle and the inner hole in the instrument to the medical liquid extraction pump. Finally, under the action of the negative pressure of the gas, the accumulated water will flow along the puncture needle, the lower pipe docking channel 54, and the lower medium in turn. The inner hole of channel 56, the inner hole of No. 1 annular elastic air membrane 59, the inner hole of upper medium flow channel 55 and the inner hole of upper pipeline docking channel 53 flow into the medical suction pump, thereby extracting the accumulated water in the abdominal cavity. During the operation, once the suction negative pressure is unstable, the inner hole of No. 1 annular elastic air membrane 59 will undergo adaptive changes, thereby realizing the buffering and pressure control functions of the gas or liquid negative pressure. Once the suction negative pressure is greater than the gravity of the inner limit movable plate 58, the inner limit movable plate 58 will move upward. At this time, the No. 1 annular elastic air membrane 59 will bend, thereby causing its inner hole to close to reduce the negative pressure intensity until the inner hole of No. 1 annular elastic air membrane 59 is completely closed. At this time, the negative pressure in the puncture needle cannot continue to increase, thereby realizing the buffering and pressure control functions of the gas or liquid negative pressure.

[0031] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An abdominal surgical suction device, comprising a fixed ring seat (1) with a fixed ring opening (2) at the center, longitudinal legs (3) fixedly mounted on the bottom of the fixed ring seat (1) and providing support, and a bottom mounting plate (4) fixedly mounted on the bottom end of the longitudinal legs (3) and capable of being fixedly mounted in a working area, characterized in that: Also includes, A buffer movable pressure control mechanism (5) is provided with a cylindrical hollow cylinder (51) fixedly installed in a fixed ring mouth (2) and having a hollow interior, a first annular elastic air membrane (59) whose top is fixedly embedded in the top of the inner cavity of the cylindrical hollow cylinder (51) and through which ascites can flow, and an inner limit movable plate (58) fixedly installed at the bottom of the first annular elastic air membrane (59) and capable of axial movement along the cylindrical hollow cylinder (51).

2. An abdominal surgical suction device according to claim 1, characterized in that: The buffer movable pressure control mechanism (5) comprises a cylindrical hollow cylinder (51) and an inner limit movable plate (58), wherein a longitudinal component movable cavity (52) is provided inside the cylindrical hollow cylinder (51), and an upper pipeline docking channel (53) and a lower pipeline docking channel (54) which are integrally formed with the cylindrical hollow cylinder (51) are provided at the top and bottom ends thereof, respectively; an upper medium flow channel (55) which is integrally formed with the cylindrical hollow cylinder (51) and whose inner hole is connected to the inner hole of the upper pipeline docking channel (53) is provided at the top end of the longitudinal component movable cavity (52), and a lower medium flow channel (55) which is integrally formed with the cylindrical hollow cylinder (51) and whose inner hole is connected to the inner hole of the lower pipeline docking channel (54) is provided at the bottom end thereof. 6), the bottom end of the cylindrical hollow cylinder (51) is provided with a rod body through-hole (57) communicating with the space below it and the bottom end of the longitudinal component movable cavity (52), the center of the inner limit movable plate (58) is provided with a central sleeve hole (510) sleeved on the periphery of the lower medium flow channel (56) and capable of axially moving along the lower medium flow channel (56), a No. 1 annular elastic air membrane (59) is embedded in a sealed edge-sealed manner between the bottom end of the upper medium flow channel (55) and the top end of the inner limit movable plate (58), and the inner hole of the No. 1 annular elastic air membrane (59) is communicated with the inner holes of the upper medium flow channel (55) and the lower medium flow channel (56), and the bottom end of the inner limit movable plate (58) is provided with a rod body fixing groove (512) corresponding to the rod body through-hole (57).

3. The abdominal surgical suction device according to claim 2, characterized in that: The inner limit movable plate (58) is embedded with an annular sealing ring (511) on the inner circumferential wall of the central sleeve hole (510) to prevent gas from flowing along the moving gap.

4. The abdominal surgical suction device according to claim 3, characterized in that: The height of the first annular elastic air membrane (59) is the same as the distance between the bottom end of the upper medium flow channel (55) and the center height of the lower medium flow channel (56).

5. The abdominal surgical suction device according to claim 4, characterized in that: The invention also includes a controllable load-bearing mechanism (6), which is provided with an annular hollow body (61) located directly below the cylindrical hollow cylinder (51) and capable of longitudinally moving with the inner limit movable plate (58), a second annular elastic air film (66) embedded in the outer circumference of the annular hollow body (61) in a sealed manner and expanding toward the periphery after being subjected to fluid pressure, and an annular medium storage chamber (64) provided between the annular hollow body (61) and the inner circumference of the second annular elastic air film (66) and capable of storing flow to change the load force on the inner limit movable plate (58).

6. The abdominal surgical suction device according to claim 5, characterized in that: The controllable load-bearing mechanism (6) includes an annular hollow body (61) having a central annular hole (62) for connecting a pipe, a longitudinal limit connecting rod (63) that passes through the rod body through-hole (57) fixedly mounted on the upper annular end of the annular hollow body (61), and a top end of the longitudinal limit connecting rod (63) fixedly mounted inside the rod body fixing groove (512), an annular medium storage cavity (64) with an open outer circumferential surface is provided inside the annular hollow body (61), a medium compensation channel (65) that is connected to the annular medium storage cavity (64) and has a liquid valve installed inside is provided on the upper annular end of the annular hollow body (61), a second annular elastic air membrane (66) is embedded in the outer circumferential surface of the annular hollow body (61) in an edge-sealed manner, and the inner circumferential wall of the second annular elastic air membrane (66) and the annular medium storage cavity (64) constitute a closed interval.

7. The abdominal surgical suction device according to claim 6, characterized in that: The structural radius of the longitudinal limiting connecting rod (63) is smaller than the structural radius of the rod body through hole (57).

8. The abdominal surgical suction device according to claim 7, characterized in that: When the top end of the annular hollow body (61) contacts the bottom end of the cylindrical hollow cylinder (51), the top end of the inner limit movable plate (58) is located below the top end of the lower medium flow channel (56).

9. The abdominal surgical suction device according to claim 8, characterized in that: The second annular elastic air membrane (66) and the first annular elastic air membrane (59) are both made of rubber material with elastic extension effect.

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