A fixing device for hysterosalpingography catheter

Abstract

The invention relates to the technical field of medical devices, and discloses a fixing device for a hysterosalpingography catheter, comprising a forceps and a fixer, wherein the forceps comprises two forceps arms, and the forceps heads of the two forceps arms are provided with an insertion rod, and the extension direction of the insertion rod is perpendicular to the rotation plane of the two forceps arms, and the fixer comprises a fixing seat and a fixing tube, and the inner diameter of the fixing tube is larger than the maximum outer diameter of the balloon of the contrast catheter before water injection and smaller than the maximum outer diameter of the balloon of the contrast catheter after water injection, and a plug hole is provided on the fixing seat. The size of the balloon of the contrast catheter after water injection is larger than the outer diameter of the fixing tube to prevent the contrast catheter from falling off; the cervix is ​​exposed with a speculum, and the fixer is inserted into the cervical canal with the forceps, and no uterine cavity operation is required, which greatly shortens the catheterization time, improves the success rate of catheterization, reduces the stimulation to the cervix, and avoids cervical bleeding; after the catheterization is completed, the insertion rod on the forceps can be moved out of the plug hole on the fixing seat to remove the forceps, so as to provide sufficient space for the intracavitary ultrasound probe contrast operation.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a fixing device for a hysterosalpingography catheter. Background Art

[0002] Fallopian tube obstruction is one of the important factors causing female infertility, accounting for 30%-50% of the statistical cases. Therefore, diagnosing the patency of the fallopian tube is a necessary test item when determining the influencing factors of infertility. The simplest and most effective method to diagnose fallopian tube obstruction is to use a hysterosalpingography catheter to perform hysterosalpingography on the uterus and fallopian tubes.

[0003] Existing double-lumen angiographic catheters such as Figure 1 As shown, it includes a tube body and a main cavity 101 and an auxiliary cavity 102 arranged in the tube body and isolated from each other. The main cavity 101 forms a channel for injecting contrast agent. The rear end of the tube body is provided with a contrast agent inlet 104 connected to the main cavity 101. A balloon 103 is also arranged on the front side of the tube body. The rear end of the tube body is connected with a medium inlet 105 connected to the auxiliary cavity 102. The auxiliary cavity 102 is a channel for injecting filling medium into the balloon 103. After the filling medium is injected into the balloon 103 and the auxiliary cavity, it plays a role in fixing the tube body.

[0004] When using a double-lumen imaging catheter for catheterization, medical staff use a speculum or other device to open the patient's vagina to expose the cervix, and then insert the double-lumen imaging catheter through the cervical canal into the uterine cavity. However, for patients with common uterine curvature, catheterization often becomes difficult, causing bleeding in the uterine cavity and cervix. In severe cases, catheterization fails, making it impossible to perform the imaging examination and the examination has to be cancelled. Summary of the invention

[0005] The purpose of the present invention is to provide a fixing device for a hysterosalpingography catheter to solve the problem in the prior art that when inserting the hysterosalpingography catheter into the uterine cavity through the cervix, the catheter is easily affected by the anteversion and anteflexion of the uterus or the retroversion and retroflexion of the uterus or partial adhesion of the uterine cavity, causing bleeding in the uterine cavity and the cervix, which often leads to the failure of the intubation.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a fixing device for a hysterosalpingography catheter, comprising a forceps and a fixer, wherein the forceps include two rotatably assembled forceps arms, and the forceps heads of the two forceps arms are provided with an insertion rod, and the extension direction of the insertion rod is perpendicular to the rotation plane of the two forceps arms. The fixer includes a fixing seat and a fixing tube arranged on the fixing seat for the radiographic catheter to pass through, the inner diameter of the fixing tube is larger than the maximum outer diameter of the radiographic catheter before the balloon is injected with water and smaller than the maximum outer diameter of the radiographic catheter after the balloon is injected with water, and the fixing seat is provided with a socket for inserting and cooperating with the insertion rods of the two forceps heads.

[0007] Preferably, the fixing seat is provided with two fixing arms parallel to each other, the fixing tube is arranged in the middle of the fixing seat, the two fixing arms are symmetrically arranged with the fixing tube as the axis, the fixing tube, the fixing arm and the fixing seat are in an E-shaped structure, and the jack is provided on the fixing arm.

[0008] Preferably, the fixed arm includes a connecting section connected to the fixing seat and a fixing section perpendicular to the connecting section, the fixing sections of the two fixed arms are arranged opposite to each other, the end faces of the two fixing sections abut against the fixing tube, the connecting section and the fixing section have a smooth transition, and the socket is opened on the fixing section.

[0009] Preferably, a friction protrusion is provided on the end surface of the fixing section, and the friction protrusion abuts against the fixing tube.

[0010] Preferably, the friction protrusion is a ridge, and the ridge extends in a direction perpendicular to the axial direction of the fixing tube.

[0011] Preferably, the two pliers arms are rotatably assembled via a rotating shaft, and the pliers head and the pliers handle of each pliers arm are located on the same side of the rotating shaft.

[0012] Compared with the prior art, the fixing device of the hysterosalpingography catheter in the embodiment of the present invention has the following beneficial effects: when fixing the contrast catheter, the contrast catheter passes through the fixing tube, and the size of the balloon of the contrast catheter after water injection is significantly larger than the outer diameter of the fixing tube, thereby preventing the contrast catheter from falling off; the fixer is inserted into the insertion rod of the clamp head through the insertion hole on the fixing seat, and the medical staff uses a speculum to expose the cervix, and inserts the fixing tube of the fixer into the cervical canal through the clamp, and the contrast tube (the water balloon is in the cervical canal) does not need to be inserted into the uterine cavity, thereby avoiding the influence of uterine anteversion, anteflexion or retroversion or partial uterine cavity adhesion on the insertion tube, greatly shortening the catheterization time, improving the success rate of catheterization, and also reducing the stimulation to the cervix, avoiding cervical bleeding; after the catheterization is completed, the fixing seat and the fixing tube support the contrast catheter, and then the insertion rod on the clamp can be moved out of the insertion hole on the fixing seat to remove the clamp, providing sufficient space for the contrast operation of the intracavitary ultrasound probe, and improving the contrast imaging effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of an existing hysterosalpingography catheter;

[0014] Figure 2 It is a schematic structural diagram of a fixing device for a hysterosalpingography catheter of the present invention;

[0015] Figure 3 yes Figure 2 A schematic diagram of the structure of a clamp of a fixing device for a hysterosalpingography catheter;

[0016] Figure 4 yes Figure 2 Schematic diagram of the structure of a fixator of a fixation device for a hysterosalpingography catheter.

[0017] In the figure, 101, main cavity; 102, auxiliary cavity; 103, balloon; 104, contrast agent inlet; 105, medium inlet; 1, forceps arm; 2, forceps handle; 3, forceps head; 31, insertion rod; 4, fixing seat; 5, fixing tube; 6, fixing arm; 61, connecting section; 62, fixing section; 7, convex ridge; 8, socket. DETAILED DESCRIPTION

[0018] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0019] A preferred embodiment of a fixing device for a hysterosalpingography catheter of the present invention is as follows Figures 2 to 4 As shown, the fixing device of the hysterosalpingography catheter comprises a forceps and a fixer, wherein the fixer is used to fix the tube body of the hysterosalpingography catheter, and the forceps are connected to the fixer to deliver the fixer into the cervix.

[0020] The pliers include two pliers arms 1, which are assembled by rotating through a rotating shaft, and the structures of the two pliers arms 1 are symmetrical to each other. A pliers head 3 is formed at one end of the pliers arm 1, and a pliers handle 2 is formed at the other end. The pliers arm 1, the pliers head 3 and the pliers handle 2 are an integrally formed structure. The pliers handle 2 and the pliers head 3 on the same pliers arm 1 are located on the same side of the rotating shaft, that is, when the pliers handle 2 is pressurized and contracted, the pliers head 3 expands in the opposite direction, and when the pliers handle 2 expands outward, the pliers head 3 contracts inward, and the movement directions of the pliers handle 2 and the pliers head 3 are opposite.

[0021] The fixer is an E-shaped structure, and includes a fixing seat 4 and a fixing tube 5. The fixing tube 5 is connected to the fixing seat 4 by gluing. In other embodiments, the fixing tube 5 and the fixing seat 4 may also be an integrally formed structure. The fixing tube 5 is used for the contrast catheter to pass through. The inner diameter of the fixing tube 5 is larger than the maximum outer diameter of the balloon of the contrast catheter before water injection and smaller than the maximum outer diameter of the balloon of the contrast catheter after water injection. After the contrast catheter is inserted into the fixing tube 5, a medium (usually water) is injected into the balloon from the medium inlet. After the balloon expands, it is axially blocked with the fixing tube 5. At the same time, the three-pronged tube where the medium inlet and the contrast agent inlet are located is blocked with the fixing tube 5 to prevent the contrast catheter from falling out of the fixing tube 5.

[0022] Two fixing arms 6 are integrally formed on both sides of the fixing seat 4. The two fixing arms 6 are arranged parallel to each other. The fixing tube 5 is arranged in the middle of the fixing seat 4. The two fixing arms 6 are arranged symmetrically with the fixing tube 5 as the axis. The fixing arm 6 is in an L-shaped structure. The fixing arm 6 includes a connecting section 61 and a fixing section 62. One end of the connecting section 61 is connected to the fixing seat 4 and the other end is connected to the fixing section 62. The fixing section 62 is parallel to the fixing tube 5. The fixing section 62 and the connecting section 61 are an integral structure and are perpendicular to each other. The fixing section 62 and the connecting section 61 have a smooth transition to reduce the trauma of the fixing arm 6 to the patient.

[0023] The fixing sections 62 of the two fixing arms 6 are arranged opposite to each other, and the fixing tube 5 passes through the gap between the two fixing sections 62. The length of the fixing tube 5 is greater than the length of the fixing arm 6, and the end surface of the fixing section 62 abuts against the fixing tube 5. The two fixing sections 62 are provided with convex ridges 7 on the opposite end surfaces, and the convex ridges 7 extend in a direction perpendicular to the axial direction of the fixing tube 5. The convex ridges 7 are used to increase the friction between the fixing sections 62 and the fixing tube 5, so as to prevent the fixing tube 5 from shaking. The convex ridges 7 form friction protrusions arranged on the end surfaces of the fixing sections 62. In other embodiments, the friction protrusions may also be friction teeth or hemispherical protrusions.

[0024] The fixing sections 62 of the two fixing arms 6 are respectively provided with insertion holes 8, which extend in a direction perpendicular to the fixing arms 6. The clamp heads 3 of the two clamp arms 1 are respectively formed with insertion rods 31, which are perpendicular to the rotation planes of the two clamp arms 1. The insertion rods 31 of the clamp heads 3 are used to be inserted and matched with the insertion holes 8 on the fixing arms 6. When the clamp handle 2 is retracted, the clamp heads 3 are opened, and the two fixing arms 6 are expanded outwards. The fixer uses the friction between the insertion rods 31 and the insertion holes 8 to achieve fixation.

[0025] The working process of the present invention is as follows: when salpingography is needed, the medical staff first exposes the cervix with a speculum, inserts the insertion rod 31 on the pliers head 3 of the forceps into the insertion hole 8 on the fixed arm 6, contracts the pliers handle 2, and the pliers head 3 drives the fixed arm 6 to expand in the opposite direction, the pliers are fixed to the fixer, and then the fixing tube of the fixer is inserted into the cervix with the pliers; after the angiography catheter is in place, the medical staff removes the pliers, fixes the fixing tube on the cervix, and then the salpingography operation can be performed.

[0026] In summary, the embodiment of the present invention provides a fixing device for a hysterosalpingography catheter. When fixing the contrast catheter, the contrast catheter passes through the fixing tube. After the balloon of the contrast catheter is filled with water, its size is significantly larger than the outer diameter of the fixing tube, thereby preventing the contrast catheter from falling off. The fixer is engaged with the insertion rod of the clamp head through the socket on the fixing seat. The medical staff uses a speculum to expose the cervix, and inserts the fixing tube of the fixer into the cervical canal through the clamp. The contrast tube (the water balloon is in the cervical canal) does not need to be inserted into the uterine cavity, thereby avoiding the influence of the uterus's anteversion or posterior tilt on the insertion tube, greatly shortening the catheterization time, and improving the success rate of catheterization. At the same time, it also reduces the stimulation to the cervix and avoids cervical bleeding. After the catheterization is completed, the fixing seat and the fixing tube support the contrast catheter, and then the insertion rod on the clamp can be moved out of the socket on the fixing seat to remove the clamp, thereby providing sufficient space for the contrast operation of the intracavitary ultrasound probe and improving the contrast imaging effect.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A fixing device for a hysterosalpingography catheter, characterized in that: The invention comprises a forceps and a fixer, wherein the forceps comprises two rotatably assembled forceps arms, the forceps heads of the two forceps arms are provided with an insertion rod, the extension direction of the insertion rod is perpendicular to the rotation plane of the two forceps arms, the fixer comprises a fixing seat and a fixing tube arranged on the fixing seat for an angiographic catheter to pass through, the inner diameter of the fixing tube is larger than the maximum outer diameter of the balloon of the angiographic catheter before water injection and smaller than the maximum outer diameter of the balloon of the angiographic catheter after water injection, the fixing seat is provided with a socket for plugging and cooperating with the insertion rods of the two forceps heads, the fixing seat is provided with two fixing arms parallel to each other, the fixing tube is arranged in the middle part of the fixing seat, the two fixing arms are symmetrically arranged with the fixing tube as the axis, the fixing tube, the fixing arm and the fixing seat are in an E-shaped structure, the socket is opened on the fixing arm, and the length of the fixing tube is larger than the length of the fixing arm.

2. The fixing device for the hysterosalpingography catheter according to claim 1, characterized in that: The fixed arm includes a connecting section connected to the fixing seat and a fixing section perpendicular to the connecting section. The fixing sections of the two fixed arms are arranged opposite to each other, the end faces of the two fixing sections abut against the fixing tube, the connecting section and the fixing section have a smooth transition, and the jack is opened on the fixing section.

3. The fixing device for the hysterosalpingography catheter according to claim 2, characterized in that: A friction protrusion is provided on the end surface of the fixing section, and the friction protrusion abuts against the fixing tube.

4. The fixing device for the hysterosalpingography catheter according to claim 3, characterized in that: The friction protrusion is a convex ridge, and the convex ridge extends in a direction perpendicular to the axial direction of the fixing tube.

5. The fixing device for the hysterosalpingography catheter according to any one of claims 1 to 4, characterized in that: The two clamp arms are rotatably assembled through a rotating shaft, and the clamp head and the clamp handle of each clamp arm are located on the same side of the rotating shaft.

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