Surgery negative pressure suction device for obstetrics and gynecology department

Abstract

The invention relates to the field of medical instruments, in particular to a surgical negative pressure suction device for gynaecology and obstetrics, which comprises a negative pressure suction instrument and a negative pressure tube communicated with the negative pressure suction instrument, the end part of the negative pressure tube is communicated with a suction gun tube, and a bearing seat is fixedly mounted at the front edge of the outer surface of the negative pressure tube; a gun base is fixedly installed on the rear edge of the outer surface of the suction gun barrel and elastically connected with a bearing base, guide lugs extend from the upper end and the lower end of the gun base correspondingly, the ends of the guide lugs are slidably connected with the bearing base, guide wheels are installed on the opposite faces of the two guide lugs correspondingly, and a pressing base is slidably installed at the rear end of the bearing base. And gun pushing rails are fixedly installed at the two ends of the pressing base and attached to the guide wheels, a pushing and fixing frame extends from one side of the pressing base, and a dredging column is embedded in the corner of the pushing and fixing frame in a penetrating mode. Normal operation of suction operation is ensured, meanwhile, pathogen infection is avoided, and use is convenient.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and particularly to a surgical negative pressure suction device for obstetrics and gynecology. Background Art

[0002] A surgical negative pressure suction device is used to suck out bleeding, exudate, pus, tissue fragments, etc. during surgery to make the surgery clear. The principle of the negative pressure suction device is to create a negative pressure state through a negative pressure machine, so that the atmosphere will suck the substances outside the suction barrel into the suction barrel to achieve the suction effect. Among them, the surgical negative pressure suction device is particularly common in obstetrics and gynecology.

[0003] During the use of the existing surgical negative pressure suction device, in order to ensure accurate suction effect, most of the suction barrels at the suction end are in a relatively thin state. However, due to the small diameter of the thin suction barrel, it is extremely easy to cause blockage during the suction process, resulting in the inability to smoothly carry out the suction. Summary of the Invention

[0004] The purpose of the present invention is to solve the disadvantages existing in the background art, and to propose a surgical negative pressure suction device for obstetrics and gynecology.

[0005] To achieve the above object, the technical solution adopted by the present invention is: a surgical negative pressure suction device for obstetrics and gynecology, including a negative pressure suction instrument and a negative pressure tube connected to the negative pressure suction instrument. The end of the negative pressure tube is connected to a suction barrel. A carrier seat is fixedly installed at the front edge of the outer surface of the negative pressure tube. A gun seat is fixedly installed at the rear edge of the outer surface of the suction barrel. The gun seat is elastically connected to the carrier seat. Guide ears extend from both the upper and lower ends of the gun seat. The ends of the guide ears are slidably connected to the carrier seat. Guide wheels are installed on the opposite surfaces of the two guide ears. A pressure seat is slidably installed at the rear end of the carrier seat. Push gun rails are fixedly installed at both ends of the pressure seat. The push gun rails are in contact with the guide wheels. A push fixing frame extends from one side of the pressure seat. A dredging column is embedded through the corner of the push fixing frame. The diameter of the dredging column is adapted to the inner diameter of the suction barrel. A groove push rod is elastically installed at the end of the push fixing frame. The groove push rod is slidably connected to the carrier seat. The front end of the groove push rod is connected to a receiving hopper. A hopper cover is elastically installed in the middle of the rear end of the receiving hopper.

[0006] Preferably, a jack is penetrated and opened on the rear end surface of the carrier seat. The dredging column is aligned with the jack. Sliding grooves are opened on both the upper and lower end surfaces of the carrier seat. The ends of the guide ears are slidably installed inside the sliding grooves.

[0007] Preferably, a column sleeve is fixedly installed at the front edge of the bearing seat, a limiting column is fixedly installed on the side of the gun seat, the column sleeve is slidably installed on the outer surface of the limiting column, a limiting cap is coaxially inlaid at the end of the limiting column, the limiting cap fits against one side of the column sleeve, a second return spring is wound around the outer side of the limiting column, one end of the second return spring is fixed to the gun seat, and the other end of the second return spring is fixed to the other side of the column sleeve.

[0008] Preferably, a main handle is fixedly installed on the side of the bearing seat, a sub-handle is fixedly installed on the other side of the pressing seat, a sealing rubber is provided between the negative pressure pipe and the suction gun barrel, the sealing rubber is fixed to the end of the negative pressure pipe, a convex prism is slidably installed through the middle of the pressing seat, one end of the convex prism is fixed to the bearing seat, and a positioning magnet is fixedly installed at the other end of the convex prism, and the positioning magnet is adsorbed to the pressing seat.

[0009] Preferably, an anti-disengagement cap is coaxially inlaid at the rear end of the groove push rod, the anti-disengagement cap fits against the rear end of the push fixing frame, a convex cap is coaxially inlaid on the outer surface of the groove push rod, a push bucket spring is wound around the outer side of the groove push rod, one end of the push bucket spring is fixed to the front end of the push fixing frame, and the other end of the push bucket spring is fixed to the convex cap.

[0010] Preferably, a connecting fixing frame is coaxially inlaid at the front end of the groove push rod, the end of the connecting fixing frame is fixed to the receiving hopper, a rod sleeve is fitted against the rear end of the connecting fixing frame, the rod sleeve is slidably installed on the outer surface of the groove push rod, an extending frame is fixedly installed on the outer surface of the rod sleeve, and the end of the extending frame is fixed to the bearing seat.

[0011] Preferably, a T-shaped frame is fixedly installed at the rear edge of the receiving hopper, a ring groove column is slidably installed through the end of the T-shaped frame, a dial ring is fixedly installed at one end of the ring groove column, the dial ring is aligned with the suction gun barrel, the dial ring is fixed to the hopper cover, a fixing ring is coaxially inlaid on the outer surface of the ring groove column, and the fixing ring is fixed to the hopper cover.

[0012] Preferably, a first return spring is wound around the outer side of the ring groove column, one end of the first return spring is fixed to the fixing ring, the other end of the first return spring is fixed to one side of the end of the T-shaped frame, and a positioning cap is coaxially inlaid at the other end of the ring groove column, and the positioning cap fits against the other side of the end of the T-shaped frame.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. By holding the main handle and pressing the secondary handle, the dredging column can be driven forward. During this process, the guide wheel will roll along the front plane of the gun push rail. When the guide wheel rolls to the inclined surface of the gun push rail, the gun seat will be driven to slide sideways under the push of the inclined surface of the gun push rail, thereby driving the suction gun barrel to move sideways, so that the suction gun barrel and the negative pressure tube are misaligned and aligned with the dredging column. At this time, the guide wheel just rolls to the rear plane of the gun push rail, and then continue to press the secondary handle to make the dredging column continue to move forward, pass through the socket, and insert into the inside of the suction gun barrel to push out pathogens such as tissue fragments blocked in the suction gun barrel, so that the suction gun barrel remains unobstructed, thereby ensuring the normal suction operation.

[0014] 2. When the auxiliary handle is just pressed, the receiving bucket will be driven forward synchronously. When the receiving bucket moves forward to the end of the suction gun barrel, the guide wheel just rolls to the inclined surface of the gun push rail. At the same time, the convex cap on the slot push rod is pressed on the rod sleeve to keep the receiving bucket still. Then continue to press the auxiliary handle. At this time, the push frame will slide on the surface of the slot push rod, and the push bucket spring will shrink and deform, so that the auxiliary handle is pressed normally. At the same time, the guide wheel rolls on the inclined surface of the gun push rail to make the suction gun barrel move sideways. During the sideways movement, the end of the suction gun barrel will push the dial ring, thereby driving the bucket cover to move sideways and open, so that the end of the suction gun barrel can correspond to the inside of the receiving bucket to receive and collect the ejected tissue fragments and other pathogens, so that they can be processed centrally after the operation to avoid infection by pathogens. At the same time, by pressing the auxiliary handle, the ejection and receiving and collection can be completed synchronously. The process is simple to operate and effectively facilitates use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of a negative pressure suction device for gynecological and obstetric surgery according to the present invention; Figure 2 It is a schematic diagram of a suction gun barrel of a negative pressure suction device for gynecology and obstetrics surgery of the present invention; Figure 3 It is a schematic diagram of another viewing angle of the suction gun barrel of a negative pressure suction device for gynecology and obstetrics surgery of the present invention; Figure 4 The invention relates to a negative pressure suction device for gynecology and obstetrics surgery. Figure 3 A magnified view of middle; Figure 5 The invention relates to a negative pressure suction device for gynecology and obstetrics surgery. Figure 3 Enlarged view of middle B; Figure 6 This is a schematic diagram of a supporting seat of a negative pressure suction device for gynecological and obstetric surgery according to the present invention; Figure 7 This is a schematic diagram of a gun holder of a negative pressure suction device for gynecology and obstetrics surgery according to the present invention; Figure 8Schematic diagram of the connection hopper of a surgical negative pressure suction device for obstetrics and gynecology in the present invention.

[0016] In the figure: 1, negative pressure suction instrument; 2, negative pressure tube; 3, secondary handle; 4, main handle; 5, suction barrel; 6, groove push rod; 7, push hopper spring; 8, convex cap; 9, push fixation frame; 10, rod sleeve; 11, connection fixation frame; 12, connection hopper; 13, dial ring; 14, ring groove column; 15, first reset spring; 16, hopper cover; 17, T-shaped frame; 18, fixed ring; 19, pressure seat; 20, push gun rail; 21, bearing seat; 22, guide ear; 23, limiting column; 24, extending frame; 25, positioning cap; 26, dredging column; 27, jack; 28, convex prism; 29, chute; 30, column sleeve; 31, limiting cap; 32, second reset spring; 33, guide wheel; 34, gun seat; 35, sealing rubber; 36, positioning magnet; 37, anti-detachment cap. Detailed implementation manners

[0017] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations.

[0018] As Figures 1-8An operation negative pressure suction device for obstetrics and gynecology as shown includes a negative pressure suction instrument 1 and a negative pressure tube 2 connected to the negative pressure suction instrument 1. The end of the negative pressure tube 2 is connected to a suction barrel 5. Since it is the prior art to generate negative pressure by using the negative pressure suction instrument 1 to suck substances outside the suction barrel 5 and it has been widely used, it is not elaborated in detail here. A bearing seat 21 is fixedly installed at the front edge of the outer surface of the negative pressure tube 2, and a gun seat 34 is fixedly installed at the rear edge of the outer surface of the suction barrel 5. The bearing seat 21 serves to bear the gun seat 34. The gun seat 34 is elastically connected to the bearing seat 21. Guide ears 22 extend from both the upper and lower ends of the gun seat 34, and the ends of the guide ears 22 are slidably connected to the bearing seat 21. The guide ears 22 serve to guide the gun seat 34. Guide wheels 33 are installed on the opposite surfaces of the two guide ears 22. A pressure seat 19 is slidably installed at the rear end of the bearing seat 21. Push gun rails 20 are fixedly installed at both ends of the pressure seat 19. The pressure seat 19 serves to bear the push gun rails 20. The push gun rails 20 are in contact with the guide wheels 33. The push gun rails 20 can push the guide wheels 33 by means of their own inclined surfaces, causing the gun seat 34 to slide and shift laterally, thereby driving the suction barrel 5 to shift laterally, making the suction barrel 5 and the negative pressure tube 2 misaligned and aligned with the dredging column 26. A push fixing frame 9 extends from one side of the pressure seat 19. A dredging column 26 is inserted and embedded through the corner of the push fixing frame 9. The push fixing frame 9 serves to fix the dredging column 26. The diameter of the dredging column 26 is adapted to the inner diameter of the suction barrel 5 and can be easily inserted into the inside of the suction barrel 5 to push out pathogens such as tissue fragments blocked in the suction barrel 5. A groove push rod 6 is elastically installed at the end of the push fixing frame 9. The groove push rod 6 is slidably connected to the bearing seat 21. The front end of the groove push rod 6 is connected to a receiving hopper 12. The groove push rod 6 can push the receiving hopper 12, causing the receiving hopper 12 to move forward to the end of the suction barrel 5. A hopper cover 16 is elastically installed in the middle of the rear end of the receiving hopper 12. The hopper cover 16 serves to seal the receiving hopper 12.

[0019] A jack 27 is formed through the rear end face of the bearing seat 21. The dredging column 26 is aligned with the jack 27. The jack 27 can allow the dredging column 26 to pass through and be normally inserted into the suction barrel 5. Sliding grooves 29 are formed on both the upper and lower end faces of the bearing seat 21. The ends of the guide ears 22 are slidably installed inside the sliding grooves 29. The sliding grooves 29 serve to allow the guide ears 22 to slide.

[0020] A bushing 30 is fixedly installed at the front edge of the bearing seat 21. A limiting post 23 is fixedly installed on the side of the gun seat 34. The bushing 30 serves to guide the limiting post 23. The bushing 30 is slidably installed on the outer surface of the limiting post 23. A limit cap 31 is coaxially embedded at the end of the limiting post 23. The limit cap 31 abuts against one side of the bushing 30. The limit cap 31 serves to position the reset position of the gun seat 34. A second return spring 32 is wound around the outside of the limiting post 23. One end of the second return spring 32 is fixed to the gun seat 34, and the other end of the second return spring 32 is fixed to the other side of the bushing 30. The second return spring 32 can reset the laterally displaced gun seat 34, enabling the suction barrel 5 to move back to the end of the negative pressure tube 2, allowing the two to communicate.

[0021] A main grip 4 is fixedly installed on the side of the bearing seat 21. The main grip 4 serves to facilitate gripping. A sub-grip 3 is fixedly installed on the other side of the pressing seat 19. A sealing rubber 35 is provided between the negative pressure tube 2 and the suction barrel 5. The sub-grip 3 serves to facilitate pressing the pressing seat 19. The sealing rubber 35 is fixed to the end of the negative pressure tube 2. When the suction barrel 5 is reset, the end of the suction barrel 5 will press against the sealing rubber 35 to seal the gap between the suction barrel 5 and the negative pressure tube 2 through the sealing rubber 35. A convex prism 28 is slidably installed through the middle of the pressing seat 19. One end of the convex prism 28 is fixed to the bearing seat 21. The convex prism 28 serves to guide the pressing seat 19. A positioning magnet 36 is fixedly installed at the other end of the convex prism 28. The positioning magnet 36 is attracted to the pressing seat 19. The positioning magnet 36 can fix the pressing seat 19.

[0022] An anti-disengagement cap 37 is coaxially embedded at the rear end of the groove push rod 6. The anti-disengagement cap 37 abuts against the rear end of the push fixing frame 9. The anti-disengagement cap 37 serves to prevent the groove push rod 6 and the push fixing frame 9 from separating. A convex cap 8 is coaxially embedded on the outer surface of the groove push rod 6. A push bucket spring 7 is wound around the outside of the groove push rod 6. One end of the push bucket spring 7 is fixed to the front end of the push fixing frame 9, and the other end of the push bucket spring 7 is fixed to the convex cap 8. When the convex cap 8 on the groove push rod 6 abuts against the rod sleeve 10 to keep the receiving bucket 12 stationary, and the sub-grip 3 is further pressed, the push fixing frame 9 will slide on the surface of the groove push rod 6 and the push bucket spring 7 will contract and deform to ensure that the sub-grip 3 is normally pressed.

[0023] A connecting and fixing frame 11 is coaxially embedded at the front end of the groove push rod 6. The end of the connecting and fixing frame 11 is fixed to the receiving hopper 12. The connecting and fixing frame 11 serves to fix the groove push rod 6 and the receiving hopper 12 together. A rod sleeve 10 is fitted and mounted at the back end of the connecting and fixing frame 11. The rod sleeve 10 is slidably mounted on the outer surface of the groove push rod 6. The rod sleeve 10 serves to guide the groove push rod 6. An extending frame 24 is fixedly mounted on the outer surface of the rod sleeve 10. The end of the extending frame 24 is fixed to the bearing seat 21. The extending frame 24 serves to fix the rod sleeve 10. The convex cap 8 abuts against the rod sleeve 10, and can position the forward movement position of the receiving hopper 12, so that the receiving hopper 12 is just located at the end of the suction gun barrel 5.

[0024] A T-shaped frame 17 is fixedly mounted at the rear edge of the receiving hopper 12. A ring groove column 14 is slidably mounted through the end of the T-shaped frame 17. The T-shaped frame 17 serves to carry and guide the ring groove column 14. A dial ring 13 is fixedly mounted at one end of the ring groove column 14. The dial ring 13 is aligned with the suction gun barrel 5. The dial ring 13 is fixed to the hopper cover 16. During the lateral movement of the suction gun barrel 5, its end will push the dial ring 13, thereby driving the hopper cover 16 to move laterally and open, so that the end of the suction gun barrel 5 can correspond to the inside of the receiving hopper 12. A fixing ring 18 is coaxially embedded on the outer surface of the ring groove column 14. The fixing ring 18 is fixed to the hopper cover 16. The fixing ring 18 serves to be pushed by the first return spring 15.

[0025] A first return spring 15 is wound around the outside of the ring groove column 14. One end of the first return spring 15 is fixed to the fixing ring 18. The other end of the first return spring 15 is fixed to one side of the end of the T-shaped frame 17. The first return spring 15 can reset the moved hopper cover 16, so that the hopper cover 16 covers the receiving hopper 12 again. A positioning cap 25 is coaxially embedded at the other end of the ring groove column 14. The positioning cap 25 abuts against the other side of the end of the T-shaped frame 17. The positioning cap 25 serves to position the reset position of the hopper cover 16.

[0026] In use, hold the main handle 4, align the suction barrel 5 with the surgical site, and then the pathogens such as tissue fragments can be sucked. When the suction barrel 5 is blocked, hold the main handle 4 and press the secondary handle 3 to drive the dredging column 26 to move forward. During this process, the guide wheel 33 will roll along the front plane of the gun pushing rail 20, and the receiving hopper 12 will be driven synchronously to move forward. When the receiving hopper 12 moves forward to the end of the suction barrel 5, the guide wheel 33 just rolls to the inclined surface of the gun pushing rail 20. At the same time, the convex cap 8 on the groove push rod 6 abuts against the rod sleeve 10 to keep the receiving hopper 12 stationary. Then continue to press the secondary handle 3. At this time, the pushing and fixing frame 9 will slide on the surface of the groove push rod 6, and the push hopper spring 7 will contract and deform, so that the secondary handle 3 can be normally pressed. At the same time, the guide wheel 33 rolls on the inclined surface of the gun pushing rail 20, and is driven by the inclined surface of the gun pushing rail 20 to drive the gun seat 34 to slide and shift laterally, thereby driving the suction barrel 5 to shift laterally, so that the suction barrel 5 and the negative pressure tube 2 are misaligned and aligned with the dredging column 26. During the lateral movement of the suction barrel 5, its end will push the dial ring 13, thereby driving the hopper cover 16 to shift and open, so that the end of the suction barrel 5 can correspond to the inside of the receiving hopper 12. When the lateral movement of the suction barrel 5 is completed, the guide wheel 33 just rolls to the rear plane of the gun pushing rail 20. Then continue to press the secondary handle 3 to make the dredging column 26 continue to move forward, pass through the jack 27, and insert into the inside of the suction barrel 5 to push out the blocked pathogens such as tissue fragments in the suction barrel 5 into the inside of the receiving hopper 12 for receiving and collecting, so that the suction barrel 5 remains unblocked and the suction operation can proceed normally.

[0027] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A negative pressure suction device for gynecological and obstetric surgery, comprising a negative pressure suction instrument (1) and a negative pressure tube (2) connected to the negative pressure suction instrument (1), wherein the end of the negative pressure tube (2) is connected to a suction gun barrel (5), characterized in that: A bearing seat (21) is fixedly mounted on the front edge of the outer surface of the negative pressure tube (2), a gun seat (34) is fixedly mounted on the rear edge of the outer surface of the suction gun barrel (5), the gun seat (34) is elastically connected to the bearing seat (21), guide ears (22) are extended from the upper and lower ends of the gun seat (34), the ends of the guide ears (22) are slidably connected to the bearing seat (21), guide wheels (33) are mounted on the opposite sides of the two guide ears (22), a pressure seat (19) is slidably mounted on the rear end of the bearing seat (21), and both ends of the pressure seat (19) are fixedly mounted. A gun pushing rail (20) is provided, the gun pushing rail (20) is fitted with a guide wheel (33), a push fixing frame (9) is extended from one side of the pressure seat (19), a dredging column (26) is embedded through the corner of the push fixing frame (9), the diameter of the dredging column (26) is adapted to the inner diameter of the suction gun barrel (5), a groove push rod (6) is elastically mounted at the end of the push fixing frame (9), the groove push rod (6) is slidably connected to the bearing seat (21), the front end of the groove push rod (6) is connected to a receiving bucket (12), and a bucket cover (16) is elastically mounted at the middle of the rear end of the receiving bucket (12).

2. A negative pressure suction device for gynecological and obstetric surgery according to claim 1, characterized in that: The rear end surface of the bearing seat (21) is penetrated by an insertion hole (27), the dredging column (26) is aligned with the insertion hole (27), the upper and lower end surfaces of the bearing seat (21) are both provided with a slide groove (29), and the end of the guide ear (22) is slidably mounted inside the slide groove (29).

3. The negative pressure suction device for gynecological and obstetric surgery according to claim 1, characterized in that: A column sleeve (30) is fixedly installed at the front end edge of the bearing seat (21), a limiting column (23) is fixedly installed on the side of the gun seat (34), the column sleeve (30) is slidably installed on the outer surface of the limiting column (23), the end of the limiting column (23) is coaxially inlaid with a limiting cap (31), the limiting cap (31) is fitted to one side of the column sleeve (30), and a No. 2 return spring (32) is wound around the outer side of the limiting column (23), one end of the No. 2 return spring (32) is fixed to the gun seat (34), and the other end of the No. 2 return spring (32) is fixed to the other side of the column sleeve (30).

4. The negative pressure suction device for gynecological and obstetric surgery according to claim 1, characterized in that: A main handle (4) is fixedly mounted on the side of the bearing seat (21), and a secondary handle (3) is fixedly mounted on the other side of the pressure seat (19). A sealing rubber (35) is provided between the negative pressure tube (2) and the suction gun barrel (5), and the sealing rubber (35) is fixed to the end of the negative pressure tube (2). A convex prism (28) is slidably mounted through the middle of the pressure seat (19), one end of the convex prism (28) is fixed to the bearing seat (21), and a positioning magnet (36) is fixedly mounted on the other end of the convex prism (28), and the positioning magnet (36) is adsorbed to the pressure seat (19).

5. The negative pressure suction device for gynecological and obstetric surgery according to claim 1, characterized in that: The rear end of the groove push rod (6) is coaxially inlaid with an anti-drop cap (37), and the anti-drop cap (37) is fitted to the rear end of the push-fixing frame (9). The outer surface of the groove push rod (6) is coaxially inlaid with a convex cap (8), and the outer side of the groove push rod (6) is wound with a push bucket spring (7), one end of the push bucket spring (7) is fixed to the front end of the push-fixing frame (9), and the other end of the push bucket spring (7) is fixed to the convex cap (8).

6. The negative pressure suction device for gynecological and obstetric surgery according to claim 1, characterized in that: A connecting frame (11) is coaxially embedded in the front end of the slot push rod (6), the end of the connecting frame (11) is fixed to the receiving bucket (12), and a rod sleeve (10) is fitted on the rear end of the connecting frame (11), the rod sleeve (10) is slidably mounted on the outer surface of the slot push rod (6), and an extension frame (24) is fixedly mounted on the outer surface of the rod sleeve (10), and the end of the extension frame (24) is fixed to the bearing seat (21).

7. The negative pressure suction device for gynecological and obstetric surgery according to claim 1, characterized in that: A T-shaped frame (17) is fixedly installed at the rear end edge of the receiving bucket (12); a ring groove column (14) is slidably installed through the end of the T-shaped frame (17); a shifting ring (13) is fixedly installed at one end of the ring groove column (14); the shifting ring (13) is aligned with the suction gun barrel (5); the shifting ring (13) is fixed to the bucket cover (16); a fixing ring (18) is coaxially inlaid on the outer surface of the ring groove column (14); and the fixing ring (18) is fixed to the bucket cover (16).

8. A negative pressure suction device for gynecological and obstetric surgery according to claim 7, characterized in that: A No. 1 return spring (15) is wound around the outer side of the annular groove column (14), one end of the No. 1 return spring (15) is fixed to a fixing ring (18), the other end of the No. 1 return spring (15) is fixed to one side of an end of a T-shaped frame (17), and a positioning cap (25) is coaxially inlaid on the other end of the annular groove column (14), and the positioning cap (25) is fitted to the other side of the end of the T-shaped frame (17).

Images