CN215780901U

CN215780901U - Endometrium perfusion catheter

Info

Publication number: CN215780901U
Application number: CN202121889815.1U
Authority: CN
Inventors: 徐仙; 白美艳; 高变变; 陈耀平; 马小红
Original assignee: General Hospital of Ningxia Medical University
Current assignee: General Hospital of Ningxia Medical University
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2022-02-11
Anticipated expiration: 2031-08-11

Abstract

The endometrium perfusion catheter is divided into a head section, a body section and a tail section, wherein the head section is conical, the top end of the head section is designed into a round and blunt smooth shape, in order to be matched with the natural bending degree of the front position/the back position of the uterus, the head of the catheter is easy to enter the uterine cavity, and a bending angle of 15 degrees is formed between the head section and the back section of the head at the position 3cm away from the top end of the head; the head corner section is provided with a plurality of medicine outlet holes which are symmetrically arranged, and the joint of the head and the body is provided with a laser printing part which can enhance the echo effect of the B-ultrasonic display; the body section is provided with scale marks for displaying the depth of inserting into the uterine cavity; the tail section is provided with a hand-held part, and the tail end is provided with an injector connecting port. The utility model injects the medicine into the uterus of the female by matching the injection device and the catheter, has simple operation, safety and effectiveness, directly acts on the uterine cavity to promote the growth of endometrium, and can suck up the intrauterine accumulated liquid caused by chronic endometritis or salpingitis by the catheter to improve the ecological environment of endometrium inoculation.

Description

Endometrium perfusion catheter

Technical Field

The utility model belongs to the technical field of medical devices for assisting in treating infertility and endometritis, and particularly relates to a endometrium perfusion catheter.

Background

Endometrial receptivity plays a crucial role among many factors affecting the drug treatment of female infertility and the success of in vitro fertilization-embryo transfer, while endometrial thickness and subintimal blood flow are the simplest and more practical important indicators for assessing endometrial receptivity changes, with endometrial thinness being the most difficult bottleneck for treating infertility. Because the thin endometrium has poor tolerance, the embryo planting rate, the clinical pregnancy rate, the continuous pregnancy rate and the live productivity are all obviously reduced, so how to improve the tolerance of the thin endometrium is a very difficult problem for reproductive medicine. Current treatments for thin endometrium are: high dose of estrogen, low dose of aspirin, subcutaneous injection of growth hormone, oral or vaginal placement of sildenafil citrate, endometrial microtrauma, uterine cavity perfusion, and stem cell therapy. The uterine cavity perfusion treatment is a method widely accepted by reproductive doctors and infertility patients, namely, medicaments are perfused into the uterine cavity through the vagina under the aseptic condition, and the medicaments directly act on the uterine cavity. Meanwhile, the medicine entering the uterine cavity can be indirectly absorbed through endometrium, so that the local blood concentration is increased, the blood circulation and the growth of endometrium are promoted, and the pregnancy outcome of embryo transplantation of infertility patients can be improved. In addition, for effusion in uterine cavity caused by chronic endometritis or salpingitis, the effusion can be completely sucked through the endometrial perfusion catheter, so that the ecological environment of endometrial inoculation is promoted, and the overall treatment effect of infertility is improved. However, at present, no special endometrial perfusion catheter is available at home and abroad, and most doctors use artificial insemination tubes as substitute products for uterine cavity perfusion treatment. The uterine cavity perfusion treatment by the artificial insemination tube has the following defects: (1) the catheter is hard in texture, and is easy to stimulate vagus nerve reflex and wound endometrial tissue in the insertion process, so that a patient has spastic lower abdominal pain and endometrial injury; (2) only one outlet is arranged at the top end of the tube, so that the medicine flows out quickly instantly, the medicine pushing speed is not easy to control, and the medicine flows out and is lost and cannot be uniformly distributed in the uterine cavity; (3) the insertion direction of the catheter cannot be accurately grasped; (4) the outflow process of the medicine can not be dynamically observed under B-ultrasonography in the lower abdomen or vagina; (5) the absorption degree of the effusion in the uterine cavity cannot be monitored simultaneously.

Disclosure of Invention

Aiming at the defects of the existing uterine cavity perfusion treatment, the utility model provides the endometrial perfusion catheter which can suck inflammatory effusion in the uterine cavity under ultrasonic monitoring and can simultaneously perfuse medicines into the uterine cavity to nourish endometrium for breeding the ecological environment.

The technical scheme of the utility model is as follows. The endometrium perfusion catheter is divided into a head section, a body section and a tail section, wherein the head section is conical, the top end of the head section is designed into a round and blunt smooth shape, in order to be matched with the natural bending degree of the front position/the back position of the uterus, the head of the catheter is easy to enter the uterine cavity, and a 15-degree bending angle is formed between the head section and the back section of the head at a position 3cm away from the top end of the head; the head corner section is provided with a plurality of medicine outlet holes which are symmetrically arranged, and the joint of the head and the body is provided with a laser printing part which can enhance the echo effect of the B-ultrasonic display; the body section is provided with scale marks for displaying the depth of inserting into the uterine cavity; the tail section is provided with a hand-held part, and the tail end is provided with an injector connecting port. The utility model is preferably made of soft polyvinyl chloride material.

The specific use method of the utility model comprises the following steps:

(1) firstly, the operator is required to shorten and flatten the nail clippers in advance, and both hands and arms are cleaned and disinfected fully.

(2) The patient is required to cut the urinary bladder, after a patient is regularly disinfected and paved with a single, the vagina is expanded by using a disposable speculum, the cervix is fully exposed, the utility model is held by the right hand, the head section of the catheter is inserted through the cervical orifice, the left hand and the right hand are matched to enable the head of the catheter to bypass the spiral folds of the cervix, and the head protrudes to the uterine cavity by about 10cm through the inner opening of the cervix.

(3) The sealed head of the drug administration end of the injection device is opened, then the tail part of the catheter is connected with the drug administration end of the injection device, a push-pull rod of the injection device is pushed to the bottom, and the drug preparation in the injection device is injected into the endometrium.

(4) Pulling the injection device out of the tail of the catheter, pulling the push-pull rod to enable the injection device to suck air and reconnect the catheter, pushing the push-pull rod to deliver the drug preparation remained in the catheter into the uterus, and finally slowly pulling out the catheter, thereby finishing the whole drug delivery process.

The utility model has the following beneficial effects:

(1) the utility model adopts soft polyvinyl chloride material, is comfortable and safe, has the head with the arc-shaped bend angle which is matched with the natural bend degree of the uterus, is inserted and retained in depression, is not easy to hurt the endometrium, reduces the difficulty and the discomfort in the process of intubation, and has small stimulation to the uterus and the endometrium by inserting the catheter into the uterus of a female for administration.

(2) The utility model relates to a drug delivery device for perfusion of female uterus, which is characterized in that an injection device and a catheter are matched for use, a perfusion drug is injected into the female uterus, the operation is simple, safe and effective, the drug directly acts on a uterine cavity to promote the growth of endometrium, meanwhile, the catheter can suck up the intrauterine accumulated liquid caused by chronic endometritis or salpingitis, and the ecological environment of endometrium inoculation is improved.

(3) The utility model discloses the pipe head sets up a plurality of medicine holes of symmetry, not only can keep the even speed that the medicine was injected, makes the medicine evenly spray simultaneously moreover and drips irrigation and get into between the side and the uterus front and back wall about the uterine cavity to guarantee that the medicine is all-round evenly to be absorbed in the uterine cavity.

(4) The utility model is provided with a laser marking part which can enhance the ultrasonic display function of the top end of the B-ultrasonic lower catheter at the position in the uterine cavity and is beneficial to judging the dispersion speed, range, dosage and other parameters of the medicine in the uterine cavity when in operation.

(5) The utility model is provided with scale marks on the tube wall of the catheter body, which is easy to display and master the depth of the catheter inserted into the uterine cavity.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the arrangement of the head section medicine holes of the present invention;

fig. 3 is a schematic diagram of the position of the drug hole at the top end of the head section.

In fig. 1-2: 1. a catheter head section; 2. a conduit body section; 3. a catheter tail section; 4. a medicine outlet hole; 5. marking a part by laser; 6. scale lines; 7. a hand-held portion; 8. an injector interface; 9. a medicine outlet hole at the top end; 10. a medicine outlet at the side end.

In fig. 2-3: a represents the position of the top medicine outlet hole; b. c, d, e, f, g, h, i, j and k respectively represent the positions of the medicine outlet holes which are alternately and symmetrically arranged in a cross shape at equal intervals.

Detailed Description

The embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in fig. 1, the endometrium perfusion catheter is divided into a catheter head section 1, a catheter body section 2 and a catheter tail section 3, wherein the head section is conical, the top end of the head section is designed into a round and blunt smooth shape, so that the head of the catheter is easy to enter a uterine cavity in order to be matched with the natural flexibility of the front position/the back position of a uterus, and a 15-degree bend angle is formed between the head section and the back section of the head at a position 3cm away from the top end of the head; a plurality of medicine outlet holes 4 which are symmetrically arranged are arranged at the head corner section, and a laser printing part 5 which can enhance the echo effect of the B ultrasonic display is arranged at the joint of the head part and the body part; the body section 2 is provided with a scale mark 6 for displaying the depth of inserting into the uterine cavity; the tail section 3 is provided with a hand-held part 7, and the tail end is provided with a syringe connecting port 8. The catheter body section pipe wall is provided with scale marks, the distance between every two scale marks is 1cm, and 6 guide mark scale marks are arranged, so that the depth of the catheter inserted into the uterine cavity can be easily mastered.

As shown in fig. 2-3, the medicine outlet holes arranged on the head section of the catheter of the utility model are arranged at intervals of 5mm, and are respectively arranged at the left and right of the horizontal position, namely, the positions c and b; the vertical positions are respectively and symmetrically arranged with a medicine outlet hole, namely the positions e and d; six medicine outlet holes, namely j, f, i, h, k and g, are arranged on the periphery of the tube wall, a medicine outlet hole a is arranged at the top end, and 11 medicine outlet holes are formed in total.

Claims

1. The endometrium perfusion catheter is characterized by comprising a head section, a body section and a tail section, wherein the head section is conical, the top end of the head section is designed into a blunt and smooth shape, in order to be matched with the natural flexibility of the front position/the back position of the uterus, the head of the catheter is easy to enter the uterine cavity, and a 15-degree bend angle is formed between the head section and the back section of the head at the position 3cm away from the top end of the head; the head corner section is provided with a plurality of medicine outlet holes which are symmetrically arranged, and the joint of the head and the body is provided with a laser printing part which can enhance the echo effect of the B-ultrasonic display; the body section is provided with scale marks for displaying the depth of inserting into the uterine cavity; the tail section is provided with a hand-held part, and the tail end is provided with an injector connecting port.

2. An endometrial perfusion catheter according to claim 1, characterized in that the drug outlet holes arranged on the head section of the catheter are arranged at intervals of 5mm, and are respectively arranged in the left position and the right position of the horizontal position, namely the position c and the position b; the vertical positions are respectively and symmetrically arranged with a medicine outlet hole, namely the positions e and d; six medicine outlet holes, namely j, f, i, h, k and g, are arranged on the periphery of the pipe wall, and a medicine outlet hole a is arranged at the top end, so that 11 medicine outlet holes are formed in total.

3. An endometrial perfusion catheter according to claim 1, characterized in that graduations are provided on the wall of the catheter body section, each graduation being spaced 1cm apart for a total of 6 guide mark graduations.

4. An endometrial perfusion catheter according to claim 1, characterized in that the perfusion catheter material is preferably made of a soft polyvinyl chloride material.