Membrane rupture and amniotic fluid collection device utilizing negative pressure adsorption rotary cutting

Abstract

The utility model discloses a membrane rupture and amniotic fluid collection device utilizing negative pressure adsorption and rotary cutting. The membrane rupture and amniotic fluid collection device comprises an adsorber, a rotary cutting device and a vacuum generating device, the adsorber is tubular, the two ends of the adsorber are an adsorption end and an operation end respectively, a one-way membrane and a sealing cover are arranged in the adsorber, the one-way membrane is fixed to the inner wall of the adsorber, an amniotic fluid cavity is formed between the one-way membrane and an end opening of the adsorption end of the adsorber, and a negative pressure cavity is formed between the sealing cover and the one-way membrane. An operation cavity is formed between the sealing cover and the port of the operation end of the adsorber; the rotary cutting device comprises a rotary handle and a rotary cutting blade; the vacuum generating device comprises a negative pressure suction pipe and a negative pressure device. According to the utility model, the rotary cutter with the flower-shaped rotary cutting edge is used for replacing a needle, so that the fetal membrane can be broken after a fetus is separated from the fetal membrane, and the fetus is prevented from being accidentally injured. In the membrane rupturing process, micro-feeding of the tool bit can be achieved, the safety of a fetus is further guaranteed, the force and depth of the fetal membrane pulled into the device can be accurately controlled, and the membrane is ruptured accurately.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical auxiliary equipment technical field, concretely is a kind of membrane breaking and amniotic fluid collecting device using negative pressure adsorption rotary cutting. BACKGROUND

[0002] When the delivery process is abnormal or fetal heart is abnormal, midwife needs to artificially break the fetal membrane to promote the progress of delivery process and observe the amniotic fluid property during the delivery process of parturient woman.The traditional membrane breaking mode is that medical staff inserts steel needle into the birth canal of pregnant woman by two fingers, and breaks the fetal membrane to help delivery.

[0003] Chinese open patent discloses a patent named "obstetric clinical use of outflow membrane breaking device", and the publication number is CN 212755838 U, which comprises: flow guide pipe, suction nozzle cover and puncture needle assembly; the tail end of the suction nozzle cover is communicated with the flow guide pipe, and the suction nozzle cover is a horn-shaped structure, a negative pressure compartment is arranged in the suction nozzle cover, and the negative pressure compartment has an annular opening at the opening position of the suction nozzle cover; a negative pressure pipe is further connected to the outside shell of the suction nozzle cover through a connecting hose, and the connecting hose is communicated with the inside of the negative pressure compartment.In the utility model, by setting the suction nozzle cover, the negative pressure compartment is arranged in the suction nozzle cover, when draining amniotic fluid, the connecting rod in the negative pressure pipe can be pulled out, the negative pressure compartment generates negative pressure and membrane adsorption sealing through the piston, so that the puncture drainage amniotic fluid is collected, the surgical environment is prevented from being polluted by amniotic fluid outflow, and convenience is provided for operation.

[0004] The above patent uses puncture needle, and some risks exist, for example, fingers of medical staff are easily pricked; parturient woman is easily pricked; if the position of pricked fetal membrane is just the body of fetus, fetus is easily pricked, and even high-risk parts such as head and face are pricked. UTILITY MODEL CONTENT

[0005] The utility model provides a kind of membrane breaking and amniotic fluid collecting device using negative pressure adsorption rotary cutting, fetal membrane can be broken after separating from fetus, prevent injuring fetus, and the force and depth that fetal membrane is pulled into device can be accurately controlled, accurate membrane breaking, the micro-feeding of tool bit can be realized in membrane breaking process, further guarantee the safety of fetus.

[0006] Therefore, the utility model provides the following technical scheme:

[0007] The application discloses a membrane breaking and amniotic fluid collecting device using negative pressure adsorption and rotary cutting, which comprises an adsorber, a rotary cutting device and a vacuum generating device.

[0008] In the scheme, the negative pressure cavity is formed between the sealing cover and the one-way membrane, the sealing cover with a ring body has higher strength than the one-way membrane, and the ring body is fixed on the outer side and not fixed on the inner side; when the pressure of the two sides changes, the sealing cover does not deform, but the one-way membrane deforms; under normal pressure, the outer periphery of the one-way membrane and the sealing cover is tightly attached to and fixed on the inner wall of the adsorber, and the one-way membrane and the sealing cover are also tightly attached to the outer side of the rotary handle; therefore, the negative pressure cavity is relatively sealed; when the vacuum generating device sucks out part of the air in the negative pressure cavity through the negative pressure suction pipe connected to the negative pressure cavity, the pressure in the negative pressure cavity decreases, the one-way membrane is tightly attached to and fixed on the inner wall of the adsorber, and therefore does not deform, but the one-way membrane as a whole slightly concaves towards the negative pressure cavity; the one-way membrane is no longer tightly attached to the rotary handle due to the concave of the one-way membrane, and a gap is formed between the one-way membrane and the rotary handle, so that a channel is formed between the amniotic fluid cavity and the negative pressure cavity, and the sealing cover does not deform; when the product is used, the adsorption end of the adsorber is pushed into the birth canal and abuts against the fetal membrane, and then the length of the rotary handle extending into the adsorber is adjusted until the rotary cutting blade touches the fetal membrane; the pressure is transmitted from the rotary cutting blade to the rear end of the rotary handle, so that the operator can conveniently judge that the rotary cutting blade has been pressed against the fetal membrane; after the pressing, the operator twists the rotary handle to rotate the rotary cutting blade, performs micro-feeding rotary cutting of the rotary cutting blade, cuts a small hole or draws a cutting line on the fetal membrane, and achieves the requirement of membrane breaking; the amniotic fluid flows out of the fetal membrane; at this time, the vacuum generating device is operated to suck out part of the air in the negative pressure cavity, so that negative pressure is formed in the negative pressure cavity; the one-way membrane concaves towards the negative pressure cavity and a gap is formed between the one-way membrane and the rotary handle, so that the amniotic fluid can flow into the negative pressure cavity from the gap; when the pressure in the negative pressure cavity and the pressure in the amniotic fluid cavity reach balance, the one-way membrane returns to the original state and is tightly attached to the rotary handle under the action of the elastic force of the one-way membrane; after the adsorber is taken out, the medical staff can observe the condition of the amniotic fluid and timely judge the state of the fetus in the fetal membrane.

[0009] As a preferred scheme of the utility model, the adsorber adsorption end is equipped with a conical guide head.

[0010] As a preferred scheme of the utility model, the sealing cover is annular, the rotating handle is equipped with a rubber sealing ring at the contact position with the sealing cover, the outer circle of the sealing cover is fixed with the inner wall of the adsorber, and the inner circle of the sealing cover is tightly attached to the outside of the rubber sealing ring. The rubber sealing ring is made of rubber material and can be bounced up and down, which is convenient for the operator to determine whether the fetal membrane is pressed on the rotary cutting blade, so that the pulling-out or insertion length of the rotating handle can be adjusted moderately.

[0011] As a preferred scheme of the utility model, the one-way membrane is soft plastic, the one-way membrane is annular, the outer circle of the one-way membrane is fixed with the inner wall of the adsorber, and the inner circle of the one-way membrane is tightly attached to the outside of the rotating handle. The one-way membrane is a thin soft plastic or silica gel membrane, which has the characteristics of force deformation and original shape recovery by self-elasticity after the external force disappears.

[0012] As a preferred scheme of the utility model, the rear end of the rotating handle is equipped with a rotating knob, the outside of the rotating handle is equipped with a scale line near the rotating knob, the scale line includes a handle elongation distance scale and a handle rotation angle scale, and the operating end of the adsorber is equipped with a mark line matched with the scale line. The scale line includes a handle elongation distance scale line arranged along the axis of the rotating handle and a handle rotation angle scale line arranged along the circumference of the rotating handle. The two kinds of scale lines are matched with the mark line on the adsorber, which is convenient for the operator to determine the insertion length of the rotating handle and the rotation angle during rotary cutting.

[0013] As a preferred scheme of the utility model, the negative pressure device includes a negative pressure suction cylinder and a pull rod, one end of the pull rod is arranged in the negative pressure suction cylinder and is equipped with a piston head, the other end of the pull rod is arranged outside the negative pressure cylinder and is equipped with a handle, and the piston head is movably connected with the negative pressure suction cylinder. The negative pressure device is used in combination with the negative pressure suction pipe, the adsorber, the rotary cutting device and the negative pressure suction pipe are disposable articles, the negative pressure suction pipe is connected with the negative pressure suction cylinder during use, the piston head is tightly sealed with the inner wall of the negative pressure suction cylinder, a vacuum cavity is formed in the negative pressure suction cylinder when the piston head moves outward, and the air in the negative pressure cavity is extracted through the negative pressure suction pipe to form negative pressure.

[0014] As a preferred scheme of the utility model, the rotary cutting blade includes a base and an annular blade, and the annular blade is equipped with petal-shaped arc-shaped cutting edges. The rotary cutting blade adopts a flower-shaped structure, which has two advantages, one is that the top cutting edge is arc-shaped and is not easy to directly hurt the fetus, and the other is that the side cutting edges can quickly cut the fetal membrane pressed into the recess of the cutting edge during the rotation.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] With the rotary cutting blade with pattern rotary cutting blade, the needle is replaced, the fetus and the fetal membrane can be separated and the membrane can be broken, the fetus is prevented from being injured, the knife head can be fed in a small amount during the membrane breaking process, the fetus safety is further guaranteed, the strength and the depth that the fetal membrane is pulled into the device can be accurately controlled, and the membrane is accurately broken. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a structural schematic view of the utility model.

[0018] Fig. 2 It is a structural schematic view of the rotary cutting blade of the utility model.

[0019] In the drawing: 1, adsorber 2, rotary cutting device 3, vacuum generating device

[0020] 4, one-way membrane 5, sealing cover 6, amniotic cavity 7, negative pressure cavity

[0021] 8, operation cavity 9, conical lead-in head 10, rubber sealing ring

[0022] 11, negative pressure suction cylinder 12, pull rod 21, rotary handle 22, rotary cutting blade

[0023] 23, rotary knob 24, base 25, annular blade 31, negative pressure suction tube. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] Please refer to Figs. 1-2 ,

[0026] The utility model discloses a membrane breaking and amniotic fluid collecting device using negative pressure adsorption rotary cutting, including adsorber 1, rotary cutting device 2, vacuum generating device 3, adsorber 1 is tubular, and the both ends of adsorber 1 are adsorption end, operating end respectively, and one-way membrane 4, sealing cover 5 are equipped in adsorber 1, one-way membrane 4 is fixed with adsorber 1 inner wall and forms amniotic fluid cavity 6 between one-way membrane 4 and adsorber 1 adsorption end port, sealing cover 5 forms negative pressure cavity 7 between sealing cover 5 and one-way membrane 4, and sealing cover 5 forms operating cavity 8 between sealing cover 5 and adsorber 1 operating end port, rotary cutting device 2 includes rotary handle 21, rotary cutting blade 22, rotary handle 21 rear end is located adsorber 1 outside, and first end passes through operating cavity 8, sealing cover 5, negative pressure cavity 7, one-way membrane 4 and extends into amniotic fluid cavity 6, and rotary cutting blade 22 is fixed on rotary handle 21 first end face, and vacuum generating device 3 includes negative pressure suction pipe 31, negative pressure ware, and one end of negative pressure suction pipe 31 is connected with negative pressure ware, and the other end passes through operating cavity 8, sealing cover 5 and extends into negative pressure cavity 7.

[0027] The adsorption end of adsorber 1 is provided with a tapered guide head 9.

[0028] The sealing cover 5 is annular, and the contact part of the rotary handle 21 and the sealing cover 5 is provided with a rubber sealing ring 10, the outer circle of the sealing cover 5 is fixed with the inner wall of the adsorber 1, and the inner circle of the sealing cover 5 is tightly attached to the outside of the rubber sealing ring 10.

[0029] The one-way membrane 4 is soft plastic, the one-way membrane 4 is annular, the outer circle of the one-way membrane 4 is fixed with the inner wall of the adsorber 1, and the inner circle of the one-way membrane 4 is tightly attached to the outside of the rotary handle 21.

[0030] The rear end of the rotary handle 21 is provided with a rotary knob 23, the outside of the rotary handle 21 close to the rotary knob 23 is provided with a scale line, the scale line includes a handle elongation distance scale and a handle rotation angle scale, and the operating end of the adsorber 1 is provided with a mark line matched with the scale line.

[0031] The negative pressure ware includes a negative pressure suction cylinder 11 and a pull rod 12, one end of the pull rod 12 is arranged in the negative pressure suction cylinder 11 and is provided with a piston head, the other end of the pull rod 12 is arranged outside the negative pressure cylinder 11 and is provided with a handle, and the piston head is movably connected with the negative pressure suction cylinder 11.

[0032] The rotary cutting blade 22 includes a base 24 and an annular blade 25, and the annular blade 25 is provided with petal-shaped arc-shaped cutting edges.

[0033] The use process of the utility model discloses: when using the product, the adsorber 1 is pushed into the birth canal and is pressed on the fetal membrane, and then the length of the rotating handle 21 extending into the adsorber 1 is adjusted until the rotary blade 22 touches the fetal membrane, and the pressure is transmitted from the rotary blade 22 to the rear end of the rotating handle 21, so that the operator can judge that the rotary blade 22 has been pressed on the fetal membrane, and then the operator rotates the rotating handle 21 to make the rotary blade 22 rotate, and the rotary blade 22 is slightly fed and cut, a small hole is cut on the fetal membrane or a cut is made on the fetal membrane, the requirement of breaking the membrane is achieved, and the amniotic fluid flows out of the fetal membrane; at this time, the vacuum generating device 3 is operated to suck the air in the partial negative pressure cavity 7, negative pressure is formed in the negative pressure cavity 7, the one-way membrane 4 is concave to the negative pressure cavity 7 and a gap is formed between the one-way membrane 4 and the rotating handle 21, the amniotic fluid can flow into the negative pressure cavity 7 from the gap, when the pressure in the negative pressure cavity 7 and the pressure in the amniotic fluid cavity 6 reach balance, the one-way membrane 4 returns to the original state and is tightly attached to the rotating handle 21 under the action of the elastic force of the one-way membrane 4, and after the adsorber 1 is taken out, the medical staff can observe the amniotic fluid condition and judge the state of the fetus in the fetal membrane in time.

[0034] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A membrane breaking and amniotic fluid collecting device using negative pressure adsorption spin cutting, characterized in that: The device comprises an adsorber, a rotary cutting device, and a vacuum generating device. The adsorber is tubular, and has an adsorption end and an operation end at two ends thereof. The rotary cutting device comprises a rotary handle and a rotary cutting blade. The vacuum generating device comprises a negative pressure suction tube and a negative pressure generator.

2. The membrane breaking and amniotic fluid collecting device using negative pressure adsorption spin cutting according to claim 1, characterized in that: The adsorption end of the adsorber is provided with a tapered guide head.

3. The device according to claim 1, wherein the device is characterized by: The sealing cover is annular, and the rotary handle is provided with a rubber sealing ring at a contact position thereof.

4. The membrane breaking and amniotic fluid collecting device using negative pressure adsorption spin cutting according to claim 1, characterized in that: The one-way membrane is soft plastic, annular, and fixed to the inner wall of the adsorber.

5. The membrane breaking and amniotic fluid collecting device using negative pressure adsorption spin cutting according to claim 1, characterized in that: The rotary handle is provided with a rotary knob at a rear end thereof, and is provided with a scale line near the rotary knob.

6. The membrane breaking and amniotic fluid collecting device using negative pressure adsorption spin cutting according to claim 1, characterized in that: The negative pressure generator comprises a negative pressure suction cylinder and a pull rod.

7. The device according to claim 1, wherein the device is characterized by: The rotary cutting blade comprises a base and an annular blade provided with petal-shaped arc-shaped cutting edges.

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