CN217938889U

CN217938889U - Stepless adjustment cervical dilator

Info

Publication number: CN217938889U
Application number: CN202220410887.1U
Authority: CN
Inventors: 寿华锋; 余益君; 江业廷; 高磊磊
Original assignee: Hangzhou Huajiang Medical Robot Co ltd
Current assignee: Hangzhou Huajiang Medical Robot Co ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-12-02
Anticipated expiration: 2032-02-28

Abstract

The utility model discloses a stepless adjustment cervical dilator, include: the injector comprises a push rod, a cylinder, a butt joint and a piston and is used for realizing liquid injection or extraction, and the butt joint is connected to the injection end of the cylinder and is provided with a first through hole; the expansion mechanism comprises a first catheter, a second catheter, a support body, a first balloon, a second balloon, a locking ring and a connecting piece, wherein the balloons are connected with the support body in a sealing manner; the mounting seat is detachably connected with the butt joint, and the working state is switched through rotation, so that liquid injection or extraction of each saccule is realized. The device can realize disposable stepless adjustment expansion cervix uteri, simple operation, efficient, effectively avoid infecting to accurate positioning, fail safe nature height when can realizing the cervix uteri expansion.

Description

Stepless adjustment cervical dilator

Technical Field

The utility model belongs to the technical field of medical equipment, concretely relates to infinitely variable control cervical dilator.

Background

The cervical dilator is a common instrument for gynecological operation, and particularly, the cervical dilator is more and more widely applied along with the popularization of hysteroscope operation. The cervical dilator that present clinical use is the metal dilating rod, divide size different to expand palace in proper order, if traditional cervical dilator uses the diameter 4mm-8mm metal rod to carry out the hierarchical expansion, every model increases progressively according to certain law, until expanding to required 7-8mm, need to change the dilating rod repeatedly during this period, the patient is painful obvious when changing the big palace rod of sign indicating number, and the repeated operation like this has the pollution, amazing cervical scheduling problem, cause the probability of iatrogenic infection also can increase, and work efficiency is low. Even if the dilation of the cervix fails, the hysteroscopic surgery cannot be smoothly completed. Therefore, the cervical dilator is high-efficiency and stepless in adjustment, and discomfort of a patient can be greatly relieved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to the above-mentioned problem, provide a stepless adjustment cervical dilator, can realize disposable stepless adjustment expansion cervix, simple operation, efficient, stimulation and the friction of cervix are few, skin contact is friendly, can effectively avoid infecting to pinpointing and improvement fail safe nature when can realizing the cervical dilatation, do not influence the patient action in the use.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a pair of stepless adjustment cervical dilator, including syringe and expanding mechanism, wherein:

the injector comprises a push rod, a barrel, a butt joint and a piston, wherein the push rod drives the piston to move along the inner wall of the barrel to realize liquid injection or extraction, the butt joint is connected to the injection end of the barrel, is an annular body and is provided with a first through hole parallel to the axis;

the expansion mechanism comprises a first catheter, a second catheter, a support body, a first balloon, a second balloon, a locking ring and a connecting piece, wherein the first balloon and the second balloon are sleeved on the support body side by side and are connected with the support body in a sealing manner;

the mounting seat is detachably connected with the butt joint, the working states are switched through rotation, the first through hole is in butt joint with the first catheter in the first working state, liquid injection or extraction of the second balloon is achieved, and the first through hole is in butt joint with the second catheter in the second working state, so that liquid injection or extraction of the first balloon is achieved.

Preferably, the outer wall of the butt joint is provided with at least one buckle and a plurality of limiting bosses, the mounting seat is of a cylindrical structure, the opening end of the mounting seat is coaxially provided with a limiting ring, a plurality of avoiding grooves used for avoiding the limiting bosses are formed in the limiting ring, two second through holes are further formed in the bottom wall of the mounting seat and are connected with the guide pipes in a one-to-one correspondence mode, a plurality of clamping grooves are further formed in the inner wall of the mounting seat, and the buckle and the clamping grooves are matched in a limiting mode to complete the switching of the working states.

Preferably, the buckle is one, and spacing boss and draw-in groove are two and the hoop equipartition.

Preferably, the expansion mechanism further comprises a first silica gel layer and a second silica gel layer, the first silica gel layer covers the first balloon, and the second silica gel layer covers the second balloon.

Preferably, the outer wall part of push rod is equipped with first screw thread, and the inner wall part of barrel is equipped with the second screw thread, and when switching operating condition, first screw thread and second screw thread cooperation are spacing.

Compared with the prior art, the beneficial effects of the utility model are that:

1) The device is convenient to realize accurate positioning during cervical dilatation through the design of the double balloons, and realizes the injection or extraction of liquid of each balloon by switching the working state through the butt joint rotation of the mounting seat and the butt joint, thereby realizing the one-time stepless adjustment and dilatation of the cervix, having convenient operation, high efficiency, less stimulation and friction on the cervix, friendly skin contact and infection avoidance;

2) The locking ring is connected with the clamping part by conical threads, and the shrinkage or expansion of the shrinkage groove is realized by the rotation matching of the locking ring and the clamping part, so that the two catheters are simultaneously clamped or loosened, the constant internal pressure of the balloon is ensured when the two catheters are closed, the safety and the reliability of the operation are improved, the disassembly of the injector is facilitated under the condition, the action of a patient is prevented from being influenced, and the quick disassembly can be realized when the two catheters are opened;

3) When switching operating condition, it is spacing through first screw thread and second screw thread auto-lock cooperation, be convenient for stabilize the injection and guarantee to annotate the liquid volume to can lock the push rod simultaneously at the switching in-process, guarantee the pressure stability of sacculus, play the effect of cervical dilatation, avoid liquid reflux, be convenient for switch.

Drawings

Fig. 1 is a schematic structural view of the stepless adjustment cervical dilator of the present invention;

FIG. 2 is a schematic view of the structure of the syringe of the present invention;

fig. 3 is a cross-sectional view of the syringe of the present invention;

FIG. 4 is a schematic view of the expanding mechanism of the present invention;

fig. 5 is a right side view of the connector of the present invention;

FIG. 6 is a schematic view of the syringe and expansion mechanism of the present invention;

fig. 7 is a partial enlarged view a of the present invention.

Description of the reference numerals: 1. an injector; 2. an expansion mechanism; 11. a push rod; 12. a barrel; 13. butt joint; 14. a piston; 111. a first thread; 121. a second thread; 131. a limiting boss; 132. a first through hole; 133. buckling; 21. a first conduit; 22. a second conduit; 23. a support body; 24. a first silica gel layer; 25. a first balloon; 26. a second balloon; 27. a second silica gel layer; 28. locking ring; 29. a connecting member; 291. a mounting seat; 292. a clamping portion; 293. a second through hole; 294. a card slot; 295. a limiting ring; 296. avoiding the groove.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

As shown in fig. 1-7, a stepless adjustment cervical dilator comprises a syringe 1 and a dilating mechanism 2, wherein:

the injector 1 comprises a push rod 11, a cylinder 12, a butt joint 13 and a piston 14, wherein the push rod 11 drives the piston 14 to move along the inner wall of the cylinder 12 to realize liquid injection or extraction, the butt joint 13 is connected to the injection end of the cylinder 12, is an annular body and is provided with a first through hole 132 parallel to the axis;

the expansion mechanism 2 comprises a first catheter 21, a second catheter 22, a support body 23, a first balloon 25, a second balloon 26, a locking ring 28 and a connecting piece 29, wherein the first balloon 25 and the second balloon 26 are sleeved on the support body 23 side by side and are in sealed connection with the support body 23, one end of the first catheter 21 penetrates through the support body 23 and then is communicated with the second balloon 26, one end of the second catheter 22 penetrates through the support body 23 and then is communicated with the first balloon 25, the connecting piece 29 comprises a mounting seat 291 and a clamping portion 292 which are coaxially connected, the clamping portion 292 is axially provided with a contraction groove and is provided with a taper thread on the outer wall, the two catheters are positioned in the contraction groove, the other ends of the two catheters are connected with the mounting seat 291, the locking ring 28 is in taper thread connection with the clamping portion 292, and the two catheters are clamped or loosened by the contraction groove through rotation;

the mounting seat 291 is detachably connected to the docking head 13, and switches working states by rotation, in the first working state, the first through hole 132 is docked with the first catheter 21 to realize the liquid injection or extraction of the second balloon 26, and in the second working state, the first through hole 132 is docked with the second catheter 22 to realize the liquid injection or extraction of the first balloon 25.

The connection and cooperation of the push rod 11, the cylinder 12 and the piston 14 of the injector 1 and the working principle thereof are all in the prior art, and are not described herein again. The scale marks are arranged on the injector 1, so that the injection amount or the suction amount of the liquid can be observed conveniently. The first through hole 132 of the abutment 13 is parallel to its axis in an offset arrangement, i.e. not located on the centre line. The first balloon 25 and the second balloon 26 can be made of high-strength fabric, or other elastic materials known in the art, and are sealingly connected to the support 23 to be inflated for cervical dilatation when a liquid (e.g., physiological saline) is injected through the catheter. The supporting body 23 is made of silica gel, plays a supporting role, is convenient for the operation of penetrating into the cervix, and ensures that the skin is friendly to contact. The locking ring 28 is in taper thread connection with the clamping part 292, the contraction or expansion of the contraction groove is realized through the rotation fit of the two, so that the two catheters are simultaneously clamped or loosened, the arrangement direction of the contraction groove and the two catheters is preferably parallel, the clamping force is uniform, after the expansion is finished, the constant internal pressure of the balloon is ensured by closing the two catheters, and the safety and the reliability of the operation are improved. And in this case the disassembly of the injector 1 can be achieved, avoiding affecting the patient's mobility. The design of the double saccule is convenient for accurate positioning, and is in butt joint with the butt joint 13 through the mounting seat 291 to rotate and switch the working state, the first through hole 132 is communicated to the containing cavity of the cylinder body 12, in the first working state, the first through hole 132 is in butt joint with the first catheter 21 to realize the liquid injection or extraction of the second saccule 26, in the second working state, the first through hole 132 is in butt joint with the second catheter 22 to realize the liquid injection or extraction of the first saccule 25, thereby realizing the disposable stepless adjustment and expansion of the cervix, being convenient to operate, high in efficiency, less in stimulation and friction to the cervix, friendly in skin contact and capable of avoiding infection.

In an embodiment, the outer wall of the joint 13 is provided with at least one buckle 133 and a plurality of limiting bosses 131, the mounting seat 291 is of a cylindrical structure, the opening end of the mounting seat is coaxially provided with a limiting ring 295, the limiting ring 295 is provided with a plurality of avoiding grooves 296 for avoiding the limiting bosses 131, the bottom wall of the mounting seat 291 is further provided with two second through holes 293, the second through holes 293 are connected with the guide pipes in a one-to-one correspondence manner, the inner wall of the mounting seat is further provided with a plurality of clamping grooves 294, and the buckle 133 and the clamping grooves 294 are matched for limiting to complete the switching of the working states.

When the liquid leakage prevention device is used, the limiting boss 131 penetrates through the avoiding groove 296 and is screwed to realize butt joint of the installation seat 291 and the butt joint 13, and the limiting ring 295 is used for limiting the butt joint 13, so that the butt joint 13 is always attached to the bottom wall of the installation seat 291, and liquid leakage is avoided. The operating state can be switched by the cooperation of the buckle 133 and the clamping groove 294, and the barrel 12 and the mounting seat 291 can be provided with matched marking lines, so that the actual butt joint position of the barrel 12 and the mounting seat 291 can be conveniently observed and determined, and misoperation can be avoided. Like this embodiment buckle be the arc boss, the draw-in groove is the recess position that is formed by two arc bosses, realizes spacing promptly when the buckle falls in this recess position, and buckle and draw-in groove still can adopt other structures among the prior art.

In one embodiment, there is one buckle 133, and two limiting bosses 131 and two clamping grooves 294 are circumferentially and uniformly distributed. As shown in fig. 5, the limiting bosses 131 are distributed in the horizontal direction, and the slots 294 are distributed in the vertical direction, that is, the directions of the two second through holes 293 are distributed side by side, it should be noted that the specific directions and the number of the limiting bosses 131 and the slots 294 may be adjusted according to actual requirements, and in order to avoid cross failure, the distribution directions of the limiting bosses 131 and the slots 294 should be different.

In one embodiment, the expanding mechanism 2 further comprises a first silicone rubber layer 24 and a second silicone rubber layer 27, wherein the first silicone rubber layer 24 covers the first balloon 25, and the second silicone rubber layer 27 covers the second balloon 26. By arranging the silica gel layer outside the balloon, the skin contact friendliness is facilitated to be ensured, and infection is avoided.

In one embodiment, the outer wall of the push rod 11 is partially provided with a first thread 111, the inner wall of the barrel 12 is partially provided with a second thread 121, and when the working state is switched, the first thread 111 and the second thread 121 are matched for limiting. When switching operating condition, it is spacing through screw thread auto-lock cooperation, be convenient for stabilize the injection and guarantee to annotate the liquid volume to can lock push rod 11 simultaneously at the switching in-process, guarantee to inject into the pressure stability of the sacculus after accomplishing, play the effect of cervical dilatation, do not worry liquid backward flow, be convenient for switch the pipe. Such as being disposed near the injection graduations that satisfy the second balloon 26.

The working principle is as follows:

when cervical dilatation is desired, the first balloon 25 and the second balloon 26 of the dilatation mechanism 2 are inserted into the cervix and both balloons are guaranteed to pass through the internal os of the cervix. Then, the mounting seat 291 is butted and assembled with the butt joint 13, the injector 1 is rotated to enable the device to be in a first working state, namely the first through hole 132 is butted with the first catheter 21, the physiological saline is injected into the second balloon 26 through the injector 1, the injection is stopped when the injection amount is reached, then the catheter is pulled outwards slowly until the first balloon 25 is exposed at the outer opening of the cervix, the injector 1 is rotated to enable the device to be in a second working state, namely the first through hole 132 is butted with the second catheter 22, the liquid is injected into the first balloon 25 through the injector 1, the injection is stopped when the injection amount is reached, the two balloons are respectively fixed at the inner opening and the outer opening of the cervix, the wandering is avoided, and the cervical dilatation is completed. The locking ring 28 is rotated to simultaneously clamp and close the two catheters, and then the injector 1 is rotated to detach the mounting seat 291 from the butt joint 13, so that the catheters are fixed by being attached to the inner thighs of the patient.

When the device needs to be disassembled, the mounting seat 291 is butted with the butt joint 13, the injector 1 is rotated to enable the device to be in a first working state, namely, the first through hole 132 is butted with the first conduit 21, then the locking ring 28 is rotated to open the two conduits, the physiological saline is pumped out to the second balloon 26 through the injector 1, when the injection amount is reached, the pumping out is stopped, then the conduits are slowly pulled outwards until the expansion mechanism 2 is completely separated from the human body, the conduits on the inner sides of the thighs of the patient are removed, the injector 1 can be selectively rotated to enable the device to be in a second working state, namely, the first through hole 132 is butted with the second conduit 22, the liquid is pumped out to the first balloon 25 through the injector 1, and the pumping out is stopped when the injection amount is reached. Then the injector 1 is rotated to realize the disassembly of the mounting seat 291 and the butt joint 13, the injector 1 can be recycled, and the expansion mechanism 2 is a disposable article.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express the more specific and detailed embodiments described in the present application, but not should be interpreted as limiting the scope of the claims of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent application shall be subject to the appended claims.

Claims

1. A stepless adjustment cervical dilator, which is characterized in that: the stepless adjustment cervical dilator comprises a syringe (1) and a dilating mechanism (2), wherein:

the injector (1) comprises a push rod (11), a cylinder body (12), a butt joint (13) and a piston (14), wherein the push rod (11) drives the piston (14) to move along the inner wall of the cylinder body (12) to realize liquid injection or extraction, the butt joint (13) is connected to the injection end of the cylinder body (12), is an annular body and is provided with a first through hole (132) parallel to the axis;

the expansion mechanism (2) comprises a first catheter (21), a second catheter (22), a support body (23), a first balloon (25), a second balloon (26), a locking ring (28) and a connecting piece (29), wherein the first balloon (25) and the second balloon (26) are sleeved on the support body (23) side by side and are in sealing connection with the support body (23), one end of the first catheter (21) is arranged on the support body (23) in a penetrating manner and then communicated with the second balloon (26), one end of the second catheter (22) is arranged on the support body (23) in a penetrating manner and then communicated with the first balloon (25), the connecting piece (29) comprises an installation seat (291) and a clamping part (292) which are coaxially connected, the clamping part (292) is provided with a contraction groove along the axial direction and provided with conical threads on the outer wall, the two catheters are arranged in the contraction groove, the other ends of the two catheters are both connected with the installation seat (291), and the locking ring (28) is in threaded connection with the clamping part (292), and the contraction groove is clamped or the two catheters are loosened through rotation;

the mounting seat (291) is detachably connected with the butt joint (13), the working state is switched through rotation, in the first working state, the first through hole (132) is in butt joint with the first catheter (21) to realize liquid injection or extraction of the second balloon (26), and in the second working state, the first through hole (132) is in butt joint with the second catheter (22) to realize liquid injection or extraction of the first balloon (25).

2. The infinitely adjustable cervical dilator of claim 1, wherein: the outer wall of butt joint (13) is equipped with at least one buckle (133) and a plurality of spacing boss (131), mount pad (291) are the tubular structure, and the open end is coaxial to be equipped with spacing ring (295), set up a plurality of dodging grooves (296) that are used for dodging spacing boss (131) on spacing ring (295), two second through-holes (293) have still been seted up to the diapire of mount pad (291), second through-hole (293) with the pipe one-to-one is connected, the inner wall of mount pad still is equipped with a plurality of draw-in grooves (294), through buckle (133) and draw-in groove (294) cooperate spacing switching of accomplishing operating condition.

3. The infinitely adjustable cervical dilator of claim 2, wherein: the number of the buckles (133) is one, and the two limiting bosses (131) and the two clamping grooves (294) are circumferentially and uniformly distributed.

4. The infinitely adjustable cervical dilator of claim 1, wherein: the expansion mechanism (2) further comprises a first silica gel layer (24) and a second silica gel layer (27), the first silica gel layer (24) covers the first balloon (25) outside, and the second silica gel layer (27) covers the second balloon (26) outside.

5. The infinitely adjustable cervical dilator of claim 1, wherein: the outer wall part of push rod (11) is equipped with first screw thread (111), the inner wall part of barrel (12) is equipped with second screw thread (121), and when switching operating condition, first screw thread (111) and second screw thread (121) cooperation are spacing.