Suction catheter for hysteromyoma resection

Abstract

The invention discloses a suction catheter for hysteromyoma resection, and belongs to the technical field of medical instruments. Comprising a catheter body, fixing pipes symmetrically arranged along the middle section of the catheter body are arranged in one end of the catheter body, the two ends of each fixing pipe are fixed to the inner side face of the catheter body respectively, sliding notches are formed in the side faces, close to the ends of the catheter body, of the fixing pipes, and sliding blocks are symmetrically arranged in the fixing pipes; one ends of the sliding blocks are arranged in the fixing pipes in a sliding mode, the other ends of the sliding blocks are located in the sliding notches, clamping pipes are arranged on the sliding blocks, located on the same side, in the two fixing pipes, the two ends of each clamping pipe are fixed to the ends, located in the sliding notches, of the sliding blocks correspondingly, and the fixing blocks are symmetrically arranged in the middles of the fixing pipes correspondingly. And a mounting hole is formed in the surface of the fixing pipe between the fixing blocks. The technical scheme is used for hysteromyoma resection operation, the root of a tumor body is rapidly exposed, and the resection efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a suction catheter for hysteromyomectomy. Background Art

[0002] For the treatment of uterine fibroids, the commonly used methods in the existing technology include follow-up observation, drug therapy and surgical treatment. Among them, surgical treatment is the most effective. Most patients can recover only through myomectomy and healthy post-treatment. Myomectomy can help patients retain their uterus. Myomectomy is usually performed by removing the fibroids through the abdomen, and a scalpel or surgical scissors are usually used for removal.

[0003] In the prior art, when uterine fibroids are removed with a scalpel, since uterine fibroids grow on healthy tissue (smooth muscle), and due to the size and hardness of the uterine fibroids, they will partially accumulate on the healthy tissue, resulting in the root of the uterine fibroid being covered. Therefore, during conventional surgical removal, medical staff need to constantly fiddle with the tumor to partially expose the root of the tumor, and then slowly remove it, which leads to low removal efficiency, prolonged operation time, and unnecessary risks for patients. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a suction catheter for hysteromyomectomy, which is used to quickly expose the root of the tumor during hysteromyomectomy and improve the removal efficiency.

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

[0006] The invention discloses a suction catheter for hysteromyomectomy, comprising a catheter body, wherein a fixing tube symmetrically arranged along the middle cross section of the catheter body is arranged inside one end of the catheter body, and two ends of the fixing tube are respectively fixed on the inner side surface of the catheter body, and a sliding notch is arranged on the side surface of the fixing tube close to the end of the catheter body, and sliders are symmetrically arranged inside the fixing tube, and one end of the slider is slidably arranged inside the fixing tube, and the other end of the slider is located in the sliding notch, and two sliders located on the same side in the two fixing tubes are provided with clamping tubes, and the two ends of the clamping tubes are respectively fixed on one end of the slider located in the sliding notch, and the middle part of the fixing tube is symmetrically provided with fixing blocks, and mounting holes are arranged on the surface of the fixing tube between the fixing blocks, and a reset spring is arranged between the slider and the fixing block, and a traction rope is arranged between the two sliders, and the two ends of the traction rope are respectively fixed on the two sliders in the same fixing tube, and the traction rope is arranged through the fixing block, and an operating rope is arranged in the mounting hole, and one end of the operating rope is fixed on the traction rope between the two fixing blocks, and the other end of the operating rope passes through the mounting hole and is located outside the catheter body.

[0007] Furthermore, a closing plate is provided in the arc-shaped space between the two fixing tubes and the inner side surface of the catheter body, and the edge of the closing plate is fixed to the inner side surface of the catheter body and the outer surface of the fixing tube; an elastic waterproof cloth is provided in the arc-shaped space between the two clamping tubes and the inner side surface of the catheter body, and the edge of the elastic waterproof cloth is fixed to the inner side surface of the catheter body and the outer surface of the clamping tube.

[0008] Furthermore, a flexible pressure sensor is provided on the surface of one side of the clamping tube facing the center of the catheter body, and the flexible pressure sensor is used to detect the contact pressure between the clamping tube and the uterine fibroid, and then judge the peripheral shape of the uterine fibroid.

[0009] Furthermore, flexible sleeves are sleeved on the fixing tubes on both sides of the mounting hole, one end of the flexible sleeve close to the clamping tube is fixed to the outer surface of the clamping tube, and the other end of the flexible sleeve is fixed to the outer surface of the fixing tube close to the mounting hole.

[0010] Furthermore, the catheter body is divided into an upper body and a lower body, the fixing tube and the clamping tube are arranged in the lower body, and the upper body and the lower body are connected by threads.

[0011] Furthermore, an exhaust pipe is provided in the middle of the catheter body, one end of the exhaust pipe is arranged close to the fixed pipe, and the other end of the exhaust pipe is extended to the outside of the catheter body. A flexible suction cup is provided on the end of the exhaust pipe close to the fixed pipe, and the small diameter end of the flexible suction cup is connected to the exhaust pipe.

[0012] Furthermore, an endoscope tube and a drug-applying tube are also provided inside the catheter body, and one end of the endoscope tube and the drug-applying tube respectively passes through two closing plates and are located below the clamping tube.

[0013] Furthermore, a limit block is provided on the inner side surface of the upper part of the catheter body, and the endoscope tube, the air extraction tube, the operating rope and the drug application tube are all arranged through the limit block.

[0014] The beneficial effects of the present invention are:

[0015] In this technical solution, the medical staff can pull the operating rope, that is, the operating rope will drive the slider to move, and the slider will compress the reset spring to drive the clamping tube to move toward the middle of the fixed tube, and then the part of the uterine fibroids that contacts the healthy tissue is clamped by the two clamping tubes. After the clamping is completed, the medical staff can lift the catheter body upward to pull the uterine fibroids upward, so that the roots of the uterine fibroids growing on the healthy tissue leak out, and form a resection space between it and the healthy tissue, so that the staff can use the cutting tool to remove the roots of the uterine fibroids, and then separate it from the healthy tissue as a whole, thereby improving the cutting integrity and effect.

[0016] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0018] Figure 1 It is a three-dimensional schematic diagram of the suction catheter of the present invention after a part of the catheter body is removed;

[0019] Figure 2 It is a three-dimensional schematic diagram of the internal components of the suction catheter of the present invention;

[0020] Figure 3 It is a schematic diagram of an exploded view of the internal components of the suction catheter of the present invention;

[0021] Figure 4 It is a schematic diagram of the suction catheter of the present invention when acting on uterine myoma resection.

[0022] The following are marked in the accompanying drawings:

[0023] 1. Catheter body; 2. Fixed tube; 3. Sliding notch; 4. Sliding block; 5. Clamping tube; 6. Fixed block; 7. Reset spring; 8. Traction rope; 9. Mounting hole; 10. Operating rope; 11. Closing plate; 12. Elastic waterproof cloth; 13. Flexible suction cup; 14. Vacuum tube; 15. Endoscope tube; 16. Medicine tube; 17. Limit block; 18. Uterine fibroids; 19. Healthy tissue; 20. Resection space; 21. Flexible pressure sensor. DETAILED DESCRIPTION

[0024] like Figure 1 to Figure 4As shown, the present invention is a suction catheter for uterine myomectomy, comprising a catheter body 1, a fixing tube 2 symmetrically arranged along the middle cross section of the catheter body 1 is arranged inside one end of the catheter body 1, two ends of the fixing tube 2 are respectively fixed on the inner side of the catheter body 1, a sliding notch 3 is arranged on the side of the fixing tube 2 close to the end of the catheter body 1 (the end located in the uterus), sliders 4 are symmetrically arranged inside the fixing tube 2, one end of the slider 4 is slidably arranged inside the fixing tube 2, and the other end of the slider 4 is located in the sliding notch 3, and a clamping tube 5 is arranged on the sliders 4 located on the same side of the two fixing tubes 2, and the two ends of the clamping tube 5 are respectively fixed to the sliders 4. At one end in the sliding notch 3, it can be understood that the two clamping tubes 5 are arranged perpendicular to the fixed tube 2, and the middle part of the fixed tube 2 is symmetrically provided with fixed blocks 6, and the surface of the fixed tube 2 between the fixed blocks 6 is provided with mounting holes 9, and reset springs 7 are provided between the slider 4 and the fixed block 6. A traction rope 8 is provided between the two sliders 4, and the two ends of the traction rope 8 are respectively fixed on the two sliders 4 in the same fixed tube 2, and the traction rope 8 is arranged through the fixed block 6. An operating rope 10 is provided in the mounting hole 9, and one end of the operating rope 10 is fixed on the traction rope 8 between the two fixed blocks 6, and the other end of the operating rope 10 passes through the mounting hole 9 and is located outside the catheter body 1.

[0025] The working principle of the above technical solution is:

[0026] When the uterine fibroid 18 is to be removed, the lower end of the catheter body 1 is firstly put on the uterine fibroid 18, and the end is in contact with the healthy tissue 19 in the uterus. Then, the medical staff pulls the operating rope 10 outside the other end of the catheter body 1, that is, the operating rope 10 drives the slider 4 to move, and the slider 4 compresses the reset spring 7 to drive the clamping tube 5 to move toward the middle of the fixed tube 2, and then the two clamping tubes 5 clamp the part of the uterine fibroid 18 that is in contact with the healthy tissue 19. After the clamping is completed, the medical staff lifts the catheter body 1 upward to remove the uterine fibroid. The tumor 18 is pulled upward, so that the root of the uterine fibroid 18 growing on the healthy tissue 19 leaks out, so that a resection space 20 is formed between it and the healthy tissue 19, which makes it easy for medical personnel to resect the root of the uterine fibroid 18 by cutting tools, thereby separating it from the healthy tissue 19 as a whole, thereby improving the cutting integrity and effect. When the cutting is completed, the catheter body 1 is lifted out of the patient's body, and the cut uterine fibroid 18 can be carried outside the body, and then the operating rope 10 is loosened, and under the action of the reset spring 7, the clamping tube 5 is reset, and the resected material inside the catheter body 1 can be discharged.

[0027] In one feasible manner, a closing plate 11 is provided in the arc-shaped space between the two fixed tubes 2 and the inner side surface of the catheter body 1, and the edge of the closing plate 11 is fixed on the inner side surface of the catheter body 1 and the outer surface of the fixed tube 2. An elastic waterproof cloth 12 (according to the prior art, it can be understood to be the same material as the balloon) is provided in the arc-shaped space between the two clamping tubes 5 and the inner side surface of the catheter body 1, and the edge of the elastic waterproof cloth 12 is fixed on the inner side surface of the catheter body 1 and the outer surface of the clamping tube 5.

[0028] When the clamping tube 5 moves toward the middle of the fixed tube 2, the clamping tube 5 will cause the elastic waterproof cloth 12 to deform, thereby covering the path through which the clamping tube 5 passes. In conjunction with the use of the closing plate 11, a waterproof barrier layer will be formed that spreads from the inner wall of the catheter to the middle, which can block the soft tissue and tissue fluid of the cut uterine fibroid 18 as much as possible, preventing it from falling into the uterus and affecting the health of the uterus.

[0029] In one feasible manner, a flexible pressure sensor 21 (pressure diaphragm) is provided on the surface of the clamping tube 5 on one side facing the center of the catheter body 1. The clamping force of the clamping tube 5 can be detected by the flexible pressure sensor 21. Medical staff can observe the pressure through the host set on the outer tube, and then control the pulling length of the operating rope 10 to avoid rupture of the uterine fibroids 18. Of course, other sensors suitable for measuring pressure are also acceptable.

[0030] It should also be noted that since the two clamping tubes 5 move synchronously, the outer shape of the uterine fibroids (such as one side is large and the other side is small) can be judged through the pressure difference on the two clamping tubes 5, which helps the doctor to choose a better cutting direction based on the judgment result (cutting from the small end, small accumulation, and better surgical field of view).

[0031] In one feasible manner, flexible sleeves are sleeved on the fixed tubes 2 on both sides of the mounting hole 9, one end of the flexible sleeve close to the clamping tube 5 is fixed to the outer surface of the clamping tube 5, and the other end of the flexible sleeve is fixed to the outer surface of the fixed tube 2 close to the mounting hole 9. The flexible sleeve can cover the outer wall of the fixed tube 2 to prevent as much tissue and liquid as possible from entering the fixed tube 2.

[0032] In one feasible manner, the catheter body 1 is divided into an upper body and a lower body, the fixing tube 2 and the clamping tube 5 are arranged in the lower body, the upper body and the lower body are connected by a threaded connection, and the detachable connection between the upper body and the lower body facilitates the cleaning and disinfection of the fixing tube 2 after the operation is completed.

[0033] In one feasible manner, an exhaust pipe 14 is also provided in the middle of the catheter body 1, one end of the exhaust pipe 14 is arranged close to the fixed pipe 2, and the other end of the exhaust pipe 14 is extended to the outside of the catheter body 1, and a flexible suction cup 13 is provided on the end of the exhaust pipe 14 close to the fixed pipe 2, and the small diameter end of the flexible suction cup 13 is connected to the exhaust pipe 14.

[0034] One end of the suction tube 14 located outside the catheter body 1 is connected to the negative pressure component, and then the flexible suction cup 13 at the end is sucked. Before clamping the uterine fibroid 18, the upper surface of the uterine fibroid 18 is first adsorbed by the suction cup, and then the flexible suction cup 13 is pulled upward to make the uterine fibroid 18 separate from the healthy tissue 19 by a certain gap, so that the clamping tube 5 can enter from the gap to clamp it. At the same time, after the uterine fibroid 18 is removed and separated in the later stage, its position can also be limited to avoid it rolling in the catheter body 1 and falling into the uterus. The negative pressure suction when the flexible suction cup 13 is in contact with the uterine fibroid 18 can achieve a better negative pressure effect between the two.

[0035] In an practicable manner, an endoscope tube 15 and a drug application tube 16 are further provided inside the catheter body 1, and one end of the endoscope tube 15 and the drug application tube 16 respectively passes through the two closing plates 11 and is located below the clamping tube 5. The endoscope facilitates observation of the internal situation and control of the cutting position, and the drug application tube 16 can accurately apply the drug to the affected area after the excision is completed.

[0036] In one feasible manner, a limit block 17 is provided on the upper inner side surface of the catheter body 1, and the endoscope tube 15, the exhaust tube 14, the operating rope 10 and the medicine application tube 16 are all passed through the limit block 17. The setting of the limit block 17 can limit the pipeline to prevent it from shaking and knotting inside the catheter body 1.

[0037] It should be noted that the external structure of the catheter body 1 is not described in detail in this application. For example, an operating portion for installing the operating rope 10 and a portion for facilitating the insertion of an endoscope should be provided. These are prior arts and reference may be made to the structure of an endoscope used in surgery in the prior art, so no further elaboration is made here.

[0038] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A suction catheter for hysteromyomectomy, characterized in that: The invention comprises a catheter body (1), wherein a fixed tube (2) is arranged symmetrically along the middle cross section of the catheter body (1) inside one end of the catheter body (1), and the two ends of the fixed tube (2) are respectively fixed to the inner side surface of the catheter body (1), and a sliding notch (3) is arranged on the side surface of the fixed tube (2) close to the end of the catheter body (1), and sliders (4) are symmetrically arranged inside the fixed tube (2), and one end of the slider (4) is slidably arranged inside the fixed tube (2), and the other end of the slider (4) is located in the sliding notch (3), and the two sliders (4) located on the same side of the two fixed tubes (2) are respectively provided with a clamping tube (5), and the two ends of the clamping tube (5) are respectively fixed to the sliders (4) located in the sliding notch (3). At one end, a fixing block (6) is symmetrically arranged in the middle of the fixing tube (2), a mounting hole (9) is arranged on the surface of the fixing tube (2) between the fixing blocks (6), a return spring (7) is arranged between the slider (4) and the fixing block (6), a traction rope (8) is arranged between the two sliders (4), the two ends of the traction rope (8) are respectively fixed to the two sliders (4) in the same fixing tube (2), and the traction rope (8) is arranged through the fixing block (6), an operating rope (10) is arranged in the mounting hole (9), one end of the operating rope (10) is fixed to the traction rope (8) between the two fixing blocks (6), and the other end of the operating rope (10) passes through the mounting hole (9) and is located outside the catheter body (1).

2. A suction catheter for hysteromyectomy according to claim 1, characterized in that: A closing plate (11) is provided in the arc-shaped space between the two fixing tubes (2) and the inner side surface of the catheter body (1), and the edge of the closing plate (11) is fixed to the inner side surface of the catheter body (1) and the outer surface of the fixing tube (2). An elastic waterproof cloth (12) is provided in the arc-shaped space between the two clamping tubes (5) and the inner side surface of the catheter body (1), and the edge of the elastic waterproof cloth (12) is fixed to the inner side surface of the catheter body (1) and the outer surface of the clamping tube (5).

3. A suction catheter for hysteromyectomy according to claim 1, characterized in that: A flexible pressure sensor (21) is provided on the surface of one side of the clamping tube (5) facing the center of the catheter body (1), and the flexible pressure sensor (21) is used to detect the contact pressure between the clamping tube (5) and the uterine fibroid (18), and then judge the peripheral shape of the uterine fibroid (18).

4. A suction catheter for hysteromy resection according to claim 1, characterized in that: Flexible sleeves are sleeved on the fixing tubes (2) on both sides of the mounting hole (9); a portion of one end of the flexible sleeve close to the clamping tube (5) is fixed to the outer surface of the clamping tube (5), and the other end of the flexible sleeve is fixed to the outer surface of the fixing tube (2) close to the mounting hole (9).

5. The suction catheter for hysteromyectomy according to claim 1, characterized in that: The catheter body (1) is divided into an upper body and a lower body, the fixing tube (2) and the clamping tube (5) are arranged in the lower body, and the upper body and the lower body are connected by threads.

6. A suction catheter for hysteromyectomy according to claim 1, characterized in that: An exhaust pipe (14) is also provided in the middle of the catheter body (1), one end of the exhaust pipe (14) is arranged close to the fixed pipe (2), and the other end of the exhaust pipe (14) is extended to the outside of the catheter body (1), and a flexible suction cup (13) is provided on the end of the exhaust pipe (14) close to the fixed pipe (2), and the small diameter end of the flexible suction cup (13) is connected to the exhaust pipe (14).

7. A suction catheter for hysteromyectomy according to claim 6, characterized in that: An endoscope tube (15) and a drug application tube (16) are also provided inside the catheter body (1), and one end of the endoscope tube (15) and the drug application tube (16) respectively passes through two closing plates (11) and are located below the clamping tube (5).

8. A suction catheter for hysteromyectomy according to claim 7, characterized in that: A limit block (17) is provided on the inner side surface of the upper part of the catheter body (1), and the endoscope tube (15), the air extraction tube (14), the operating rope (10) and the drug application tube (16) are all arranged through the limit block (17).

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