A uterine suction device

Abstract

The present invention discloses a uterine suction device, comprising a cylinder body and a holding member, wherein the holding member is arranged at one end of the cylinder body, and the one end of the cylinder body is provided with a plastic tube head, and the plastic tube head is embedded in the holding member so as to detachably connect and fix the holding member and the cylinder body, wherein the holding member comprises a tube body, and two oppositely arranged closing keys are arranged on the tube body, and one end of the closing key has a card slot, and the two closing keys can clamp and fix the plastic tube head through the card slot, and the plastic tube head is clamped and fixed by using the two closing keys to reduce the deformation of the plastic tube head when closed, which is equivalent to reducing the elastic stress required by the plastic tube head itself when closed, thereby improving the service life of the plastic tube head. The purpose of the present invention is to provide a uterine suction device, which can reduce damage to some components of the uterine suction device, thereby improving the safety of medical staff when in use.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a uterine aspirator. Background Art

[0002] As we all know, artificial abortion is a remedial measure after contraceptive failure, mainly including traditional vacuum aspiration and medical abortion techniques. The vacuum aspirator currently used for artificial abortion needs to be connected to a suction tube and inserted into the uterus, directly contacting the tissue on the endometrium, and through the vacuum suction operation, the embryonic tissue is sucked out of the uterus to achieve the purpose of terminating the pregnancy.

[0003] However, the existing uterine suction device has the following defects. The uterine suction device generally has a long tube, a rubber connecting sleeve is provided on the end of the long tube, and a holding member is fixed on the rubber connecting sleeve. The uterine suction device will use the holding member to seal the rubber connecting sleeve after each use to prevent backflow. However, after the uterine suction device is used many times, the rubber connecting sleeve will be partially broken due to repeated use and squeezing of the holding member, thereby making the long tube seal invalid, which will affect the continued use of the product and may cause medical safety accidents in severe cases. Summary of the invention

[0004] The purpose of the present invention is to provide a uterine aspirator, which can reduce damage to some components of the uterine aspirator, thereby improving the safety of medical staff when using it.

[0005] In order to achieve the above object, the technical solutions of the present invention are:

[0006] A uterine suction device, comprising

[0007] A cylinder body, wherein a piston assembly is arranged in the cylinder body;

[0008] A gripping member, the gripping member being arranged at one end of the cylinder;

[0009] A plastic tube head is provided at one end of the cylinder, and the plastic tube head is embedded in the holding member to connect and fix the holding member to the cylinder;

[0010] The holding member includes a tube body, on which two oppositely arranged closing keys are provided, one end of each closing key has a slot, and the two closing keys can clamp and fix the plastic tube head through the slot.

[0011] A uterine suction device of the present invention comprises a cylinder body and a holding member, wherein the holding member is arranged at one end of the cylinder body, and the one end of the cylinder body has a plastic tube head, and the plastic tube head is embedded in the holding member to make the holding member and the cylinder body detachably connected and fixed, wherein the holding member comprises a tube body, and two oppositely arranged closing keys are provided on the tube body, and one end of the closing key has a card slot, and the two closing keys can clamp and fix the plastic tube head through the card slot. By using two closing keys to clamp and fix the plastic tube head, the deformation of the plastic tube head when closed is reduced, which makes it easier to close the plastic tube head on the one hand, and has a better sealing effect than using only one closing key to close the plastic tube head on the other hand, thereby improving the negative pressure effect of the cylinder body and the safety of medical staff when using the uterine suction device.

[0012] Furthermore, the closing key includes a cover portion, a first connecting rod and a second connecting rod, one end of the first connecting rod is connected to the cover portion, a buckle portion is provided on the first connecting rod, one end of the second connecting rod is connected to the slot, and the first connecting rod and the second connecting rod are relatively slidably connected in combination, and a spring is sleeved on the second connecting rod.

[0013] Furthermore, an outer edge is provided at one end of the first connecting rod relative to the cover plate portion, and the outer edge protrudes from an outer wall of the first connecting rod.

[0014] Furthermore, the slot is a square slot, and the width of the slot is equivalent to the width of the plastic tube head.

[0015] Furthermore, the slot includes a side edge, and the depth of the side edge is less than the thickness of the tube wall of the plastic tube head.

[0016] Furthermore, the cross-sectional diameter of the plastic tube head decreases gradually in the direction away from the cylinder body, and the shape of the plastic tube head is equivalent to the shape of the tube body.

[0017] Furthermore, a limiting buckle is provided at one end of the cylinder, protrusions are provided at both ends of the limiting buckle, and buckle holes cooperating with the protrusions are provided on the peripheral wall of the cylinder, and the limiting buckle is installed on the cylinder by using the protrusions and the buckle holes.

[0018] Furthermore, the piston assembly includes a piston block, a connection and a handle, and the piston block, the connecting rod and the handle are integrally formed, wherein the cross-sectional shape of the piston block is equivalent to that of the cylinder, and a rubber ring is sleeved on the piston block.

[0019] Furthermore, the sealing element includes a rubber ring, and a ball group is provided on the rubber ring.

[0020] Furthermore, there are oblique rods arranged obliquely to the connecting rod on both sides of the connecting rod, and the distance between the ends of the two oblique rods is greater than the diameter of the cylinder.

[0021] For better understanding and implementation, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural cross-sectional view of the uterine suction device of the present invention;

[0023] Figure 2 for Figure 1 Schematic diagram of the structure at A in the middle;

[0024] Figure 3 It is a structural side view of a closed key;

[0025] Figure 4 It is a top view of the structure of the sealing member;

[0026] Figure 5 A schematic diagram of the cross-sectional structure of the seal. DETAILED DESCRIPTION

[0027] In order to better illustrate the present invention, the present invention is further described in detail below with reference to the accompanying drawings.

[0028] like Figure 1 to Figure 2 As shown, a uterine suction device includes a cylinder 1 and a gripping member 2, wherein a piston assembly 3 is provided in the cylinder 1, and the gripping member 2 is arranged at one end of the cylinder 1; a plastic tube head 11 is provided at one end of the cylinder 1, and the plastic tube head 11 is embedded in the gripping member 2 to connect and fix the gripping member 2 to the cylinder 1; wherein, the gripping member 2 includes a tube body 21, and two oppositely arranged closing keys 22 are provided on the tube body 21, and one end of the closing key 22 has a slot 221, and the two closing keys 22 can clamp and fix the plastic tube head 11 through the slot 221.

[0029] A uterine suction device of the present invention comprises a barrel 1 and a gripping member 2, wherein the gripping member 2 is arranged at one end of the barrel 1, and the barrel 1 has a plastic tube head 11 at one end, and the plastic tube head 11 is embedded in the gripping member 2 so that the gripping member 2 and the barrel 1 are detachably connected and fixed, wherein the gripping member 2 comprises a barrel 21, and two oppositely arranged closing keys 22 are provided on the barrel 21, and one end of the closing key 22 has a card slot 221, and the two closing keys 22 can clamp and fix the plastic tube head 11 through the card slot 221. By using two closing keys 22 to clamp and fix the plastic tube head 11, the deformation of the plastic tube head 11 when closed is reduced. On the one hand, it makes it easier to close the plastic tube head 11, and on the other hand, compared with only using one closing key 22 to close the plastic tube head 11, it has a better sealing effect, improves the negative pressure effect of the barrel 1, and improves the safety of medical staff when using the uterine suction device.

[0030] In addition, the elastic stress required by the plastic tube head 11 when it is closed is reduced, making it easier for medical staff to use it and prolonging the service life of the plastic tube head 11.

[0031] In this embodiment, the plastic tube head 11 can be made of organic glue, which has a certain viscosity. When the uterine suction device is in use, a guide tube needs to be fixedly connected to the end of the plastic tube head 11 to facilitate the bonding connection between the guide tube and the organic glue.

[0032] Preferably, the holding member 2 and the plastic tube head 11 are coaxially arranged.

[0033] In addition, a plurality of capacity scale lines (not shown) are arranged on the surface of the cylinder 1 , and the plurality of capacity scale lines (not shown) are evenly spaced and arranged on the surface of the cylinder 1 starting from the top of the cylinder 1 to the bottom of the cylinder 1 .

[0034] It should be noted that the volume of the cylinder 1 is related to the shape and depth of the cylinder 1 , and the volume of the cylinder 1 is not specifically limited.

[0035] like Figures 2 to 3 As shown, the closing key 22 includes a cover portion 222, a first connecting rod 223 and a second connecting rod 224, one end of the first connecting rod 223 is connected to the cover portion 222, a buckle portion 226 is provided on the first connecting rod 223, one end of the second connecting rod 224 is connected to the slot 221, and the first connecting rod 223 and the second connecting rod 224 are relatively slidably connected in combination, and a spring 225 is sleeved on the second connecting rod 224.

[0036] The buckle portion 226 is integrally formed on the first connecting rod 223 and is in the shape of an oblique cut. When the plastic tube head 11 needs to be closed, the user manually presses the two closing keys 22. At this time, the first connecting rod 223 and the second connecting rod 224 are squeezed by the spring 225, and the second connecting rod 224 moves toward the central axis of the tube body 21 until it abuts against the plastic tube head 11. At this time, the buckle portion 226 is completely moved into the tube body 21, and the buckle portion 226 abuts against the inner wall of the tube body 21, so that the closing key 22 is in a state of clamping and fixing the plastic tube head 11. In addition, the spring 225 is in a state of having a tendency to recover deformation at this moment. The spring 225 pushes the first connecting rod 223 relatively, so that the buckle portion 226 can realize the function of temporarily locking the closing key 22.

[0037] When the plastic tube head 11 needs to be unsealed, the user manually presses the two sealing keys 22 to slightly move the first connecting rod 223 or the buckle portion 226 to the corresponding button hole, and then releases the sealing key 22 to unseal the plastic tube head 11 .

[0038] Secondly, the closing position of the plastic tube head 11 can be located in the middle of the tube body 21. Relatively speaking, the deformation displacement distance of the outer wall of the plastic tube head 11 when it needs to be closed is reduced, thereby effectively preventing the local position of the plastic tube head 11 from breaking after repeated use.

[0039] like Figure 2 As shown, an outer edge 227 is provided at one end of the first connecting rod 223 relative to the cover portion 222, and the outer edge 227 protrudes from the outer wall of the first connecting rod 223. The function of the outer edge 227 is to partially restrict the first connecting rod 223 within the tube body 21, so that the first connecting rod 223 can be movably fixed on the tube body 21.

[0040] The spring 225 between the first link 223 and the second link 224 is also in a squeezed state when the closing key 22 is not in use, so as to prevent the first link 223 from shaking when the closing key 22 is not in use, thereby preventing the closing key 22 from being used with subsequent precision.

[0041] Preferably, the slot 221 is a square slot, and the width of the slot 221 is equivalent to the width of the plastic tube head 11 . When the two closing keys 22 clamp the plastic tube head 11 , the plastic tube head 11 is partially restricted within the alignment confirmation range of the two slots 221 .

[0042] It should be noted that the slot 221 can also be a trapezoidal slot or an arcuate slot. The shape of the slot is specifically related to the hardness of the material of the plastic tube head 11. In this embodiment, the slot 221 is limited to a square slot, which is determined based on the ease of production and versatility of use.

[0043] like Figure 3 As shown, the slot 221 includes a side edge 2211 , the depth of which is less than the wall thickness of the plastic tube head 11 , so that the plastic tube head 11 can be fully squeezed to avoid the generation of flow gaps.

[0044] like Figure 1 As shown, the cross-sectional diameter of the plastic tube head 11 decreases gradually in the direction away from the cylinder 1, so as to facilitate the connection between the plastic tube head 11 and the guide tube used with it, so that the end of the plastic tube head 11 can fully wrap one end of the guide tube to avoid the generation of gaps.

[0045] In addition, in order to prevent the plastic tube head 11 from shaking when the uterine aspiration device is used, the shape of the plastic tube head 11 is equivalent to the shape of the tube body 21, and the tube body 21 is used to limit the extension position of the plastic tube head 11.

[0046] Preferably, the expanded diameter of the end of the tube body 21 is slightly larger than the cross-sectional diameter of the end of the plastic tube head 11 , so as to facilitate the direction adjustment of the guide tube connected and fixed to the plastic tube head 11 .

[0047] like Figure 1 As shown, a limit buckle 4 is provided at one end of the cylinder 1, protrusions 41 are provided at both ends of the limit buckle 4, and buckle holes cooperating with the protrusions 41 are provided on the peripheral wall of the cylinder 1. The limit buckle 4 is installed on the cylinder 1 by using the protrusions 41 and the buckle holes.

[0048] When the limit buckle 4 is buckled on the cylinder 1 , the protrusion 41 of the limit buckle 4 protrudes from the inner wall of the cylinder 1 , and the protrusion 41 limits the maximum position to which the piston assembly 3 can be pulled out of the cylinder 1 .

[0049] On the other hand, the maximum position limits the volume of the cylinder 1 .

[0050] like Figure 1 Or as shown, the piston assembly 3 includes a piston block 31, a connecting rod 32 and a handle 33, and the piston block 31, the connecting rod 32 and the handle 33 are integrally formed, wherein the cross-sectional shape of the piston block 31 is equivalent to that of the cylinder 1, and a seal 35 is sleeved on the piston block 31.

[0051] The sealing member 35 includes a rubber ring 351 , and a ball group 352 is disposed on the rubber ring 351 .

[0052] When the piston assembly 3 is pulled up, the rubber ring 351 is in close contact with the inner wall of the cylinder 1, and the ball group 352 is in contact with the cylinder wall. Since the rubber ring 351 is in surface contact with the cylinder 1, compared with the existing cylindrical rubber ring, medical staff can easily lift it up when using it.

[0053] After the uterine aspiration device is used, it is not necessary for the uterine aspiration device to generate negative pressure in the cylinder body, and the shape of the rubber ring 351 does not affect the return of the piston 3.

[0054] In this embodiment, the protrusion 41 is used to limit the displacement position of the piston block 31 , thereby limiting the displaceable distance of the piston assembly 3 .

[0055] When the piston block 31 is pulled to the position of the protrusion 41, in order to prevent the piston block 31 from being pushed back into the cylinder 1 due to misoperation, there are inclined rods 34 arranged obliquely to the connecting rod 32 on both sides of the connecting rod 32, and the distance between the ends of the two inclined rods 34 is greater than the diameter of the cylinder 1. The two inclined rods 34 are placed in the cylinder 1 when the piston block 31 is not pulled out. When the piston block 31 is pulled to the position of the protrusion 41, the two inclined rods 34 are placed outside the cylinder 1, and the two inclined rods 34 are used to prevent the piston block 31 from being pushed into the cylinder 1 again.

[0056] Preferably, one end of the cylinder 1 further has a base 12 , and the base 12 provides a resting position for the inclined rod 34 .

[0057] The grip shell and the piston assembly 3 are specifically PC engineering injection molding parts or ABS engineering injection molding parts.

[0058] It should be noted that engineering plastics include polycarbonate (PC), polyamide (PA), polyoxymethylene (POM), modified polyphenylene ether (PPE), polyester (PBTP), polyphenylene sulfide (PPS), polyarylate, etc. The tensile strength exceeds 50MPa, the impact resistance exceeds 50J / m2, the bending modulus is 24000kg / cm2, the load deflection temperature exceeds 100°C, and the hardness, impact resistance and aging resistance are excellent. Among them, the most preferred solution for the gripping shell or even the barrel 1 of the uterine suction device in the embodiment of the present invention is PC injection molding, ABS injection molding, PPS injection molding or PEEK injection molding. The above-mentioned engineering injection moldings all have outstanding high-strength characteristics, and also have the characteristics of compression resistance, strong impact resistance, radiation resistance, stable insulation, and hydrolysis resistance.

[0059] According to the disclosure and teaching of the above description, those skilled in the art to which the present invention belongs may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the present invention.

Claims

1. A uterine suction device, characterized in that: include A cylinder body, wherein a piston assembly is arranged in the cylinder body; A gripping member, the gripping member being arranged at one end of the cylinder; A plastic tube head is provided at one end of the cylinder, and the plastic tube head is embedded in the holding member to connect and fix the holding member to the cylinder; Wherein, the holding member comprises a tube body, on which two oppositely arranged closing keys are arranged, one end of each closing key has a clamping groove, and the two closing keys can clamp and fix the plastic tube head through the clamping groove; The sealing key comprises a cover plate portion, a first connecting rod and a second connecting rod, one end of the first connecting rod is connected to the cover plate portion, a buckle portion is provided on the first connecting rod, one end of the second connecting rod is connected to the slot, and the first connecting rod and the second connecting rod are slidably connected in a relatively combined manner, and a spring is sleeved on the second connecting rod; The cross-sectional diameter of the plastic tube head decreases gradually in a direction away from the cylinder body, and the shape of the plastic tube head is equivalent to that of the tube body.

2. The uterine suction device according to claim 1, characterized in that: An end of the first connecting rod opposite to the cover plate portion is provided with an outer edge, and the outer edge protrudes from the outer wall of the first connecting rod.

3. The uterine aspiration device according to claim 1, characterized in that: The slot is a square slot, and the width of the slot is equivalent to the width of the plastic pipe head.

4. The uterine aspiration device according to claim 1, characterized in that: The clamping groove comprises a side edge, and the depth of the side edge is less than the tube wall thickness of the plastic tube head.

5. The uterine aspiration device according to claim 1, characterized in that: A limiting buckle is provided at one end of the cylinder, protrusions are provided at both ends of the limiting buckle, and buckle holes cooperating with the protrusions are provided on the peripheral wall of the cylinder. The limiting buckle is installed on the cylinder by cooperating with the protrusions and the buckle holes.

6. The uterine aspiration device according to claim 1, characterized in that: The piston assembly comprises a piston block, a connecting rod and a handle, wherein the piston block, the connecting rod and the handle are integrally formed, wherein the cross-sectional shape of the piston block is equivalent to that of the cylinder, and a sealing member is sleeved on the piston block.

7. The uterine aspiration device according to claim 6, characterized in that: The sealing element comprises a rubber ring, on which a ball group is arranged.

8. The uterine aspiration device according to claim 6, characterized in that: The two sides of the connecting rod are provided with oblique rods which are arranged obliquely to the connecting rod, and the distance between the ends of the two oblique rods is greater than the diameter of the cylinder.

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