Knot pusher for hysteroscope

Abstract

The utility model relates to the technical field of knot pushing devices, and discloses a knot pushing device for a hysteroscope, which comprises a knot pushing tube, one end of the knot pushing tube is provided with a top through hole, the side edge of the knot pushing tube close to the top through hole end is provided with a side through window, and the knot pushing tube is internally provided with a cutting component; the cutting assembly comprises a cutting base plate and a cutting blade, the cutting base plate is fixed to the position, between the side penetrating window and the top penetrating hole, of the inner wall of the knot pushing pipe, and the cutting blade is arranged on the side edge, away from the end of the cutting base plate, of the side penetrating window. By means of the mode that an operation line can be pulled out of the uterine cavity, knotted repeatedly and then pushed into the uterus to the uterine wall in sequence, two slipknots can be pushed to form a hard knot, it is guaranteed that suturing is firm, the using effect is good, the two difficult problems of knotting and line cutting in the hysteroscope suturing operation are solved, the operation difficulty is greatly reduced, and great popularization of the uterine cavity suturing technology is facilitated.

Description

Technical Field

[0001] The utility model application relates to the technical field of knot pushers, in particular to a knot pusher for hysteroscopy. Background Art

[0002] Clinically, there are often patients whose Mirena falls out due to uterine enlargement or cervical relaxation. They need to suture and fix Mirena to the inner wall of the uterine cavity under hysteroscopy to solve the problem of falling out. The sutures need to be knotted during the suturing process. It is extremely difficult to tie knots with one hand in the narrow space of the uterine cavity (about 5ml). In order to facilitate knotting, a knot pusher is used. When the knot pusher is used, the suture needle with thread passes through the muscle wall in the uterine cavity, and the two ends of the surgical thread are pulled out of the cervical os. After the knot is tied, it is pushed into the uterus to the uterine wall through the knot pusher.

[0003] Currently, there is no knotter suitable for hysteroscopic surgery in clinical practice. The surgeon needs to pull the suture out of the uterine cavity to tie a knot, and then repeatedly use a needle holder to push the knot into the uterine cavity with difficulty. Finally, the surgeon needs to insert scissors deep into the uterine cavity to cut the suture under direct vision of the hysteroscope. The above operations are extremely difficult and require extremely high standards from the surgeon, which has resulted in the inability to vigorously promote Mirena suturing technology. Summary of the invention

[0004] In order to solve the problems of low knot firmness and inconvenience in cutting of the knots in the existing hysteroscope knot pusher during use, the utility model provides a hysteroscope knot pusher to solve the above problems.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A knot pusher for hysteroscopy comprises a knot pusher tube, one end of which is provided with a top through hole, a side through window is provided on the side of the knot pusher tube near the top through hole, and a cutting assembly is arranged inside the knot pusher tube;

[0007] The cutting assembly includes a cutting pad and a cutting blade. A cutting pad is fixed on the inner wall of the push-knot tube between the side through window and the top through hole, and a guide hole is opened on the side of the cutting pad away from the side through window. A cutting blade is arranged on the side of the side through window away from the end of the cutting pad, and the cutting blade is slidably connected to the inside of the push-knot tube. A rubber strut is fixed to the end of the cutting blade away from the top through hole, and a plurality of iron wires are equidistantly embedded in the rubber strut. A movable connecting block is fixed to the end of the rubber strut away from the cutting blade, and a connecting rod is fixed to the end of the movable connecting block away from the cutting pad. A pressing rod is fixed to the end of the connecting rod away from the top through hole, and the pressing rod extends to the outside of the push-knot tube.

[0008] Furthermore, a non-slip rubber sleeve is glued and fixed to the outer surface of the push-knot tube away from the top perforation, and the end of the push-knot tube close to the top perforation is set to a hollow cone.

[0009] Furthermore, a wire entry hole is opened in the side wall of the push-knot tube between the top through hole and the cutting pad, the length of the side through window is greater than the sum of the lengths of the two wire entry holes, and the width of the side through window is greater than the width of the wire entry hole.

[0010] Furthermore, the top through hole, the side through window and the wire entry hole are all connected to the inside of the push-knot tube, the diameter of the wire entry hole is equal to the diameter of the top through hole, and the diameter of the top through hole is smaller than the sum of the diameters of the two surgical lines.

[0011] Furthermore, the outer edge of the cutting pad is arranged to be an arc shape matching with the end of the push-knot tube, and the height of the guide hole is smaller than the height of the cutting blade.

[0012] Furthermore, a supporting collar is slidably sleeved on the connecting rod, and the outer surface of the supporting collar is fixed on the inner wall of the push-knot tube. A spring is sleeved on the connecting rod between the supporting collar and the movable connecting block, and both ends of the spring are respectively fixed on the movable connecting block and the supporting collar.

[0013] Furthermore, a limiting ring plate is provided on the side of the movable connecting block away from the side through-window, and the outer surface of the limiting ring plate is fixed on the inner wall of the push-knot tube, and the limiting ring plate is slidably sleeved on the outer side of the spring.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. In the utility model, the top perforation cooperates with the side window, so that the surgical thread can be pulled outside the uterine cavity and knotted multiple times, and then pushed into the uterus to the uterine wall in sequence, and two slipknots can be pushed into a dead knot to ensure that the suture is firm and the use effect is good. The problem of low knotting firmness of the existing hysteroscopic knot pusher during use is solved, and the knotting needs after surgery are fully met.

[0016] 2. In the utility model, the surgical thread can be sheared at a position near the knotting point inside the uterine cavity through the cutting assembly, without cutting the surgical thread outside the uterine cavity, thus avoiding excessive residue when the surgical thread is cut and affecting recovery. The problem that the existing hysteroscopic knot pusher is inconvenient to cut after the knot is tied during use is solved, and the practicality of the knot pusher is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1is a front view schematic diagram of a knot pusher structure according to an embodiment of the present application;

[0019] Figure 2 yes Figure 1 A schematic cross-sectional view of the knot pusher structure in the illustrated embodiment;

[0020] Figure 3 yes Figure 1 A schematic cross-sectional view of the push-knot tube structure in the illustrated embodiment;

[0021] Figure 4 yes Figure 1 Schematic diagram of the cutting assembly structure in the embodiment shown.

[0022] The meanings of the reference numerals in the figure are: 1. push-knot tube; 2. top perforation; 3. side window; 4. cutting pad; 5. cutting blade; 6. moving connecting block; 7. connecting rod; 8. pressing rod; 9. supporting ring; 10. spring; 11. limiting ring plate; 12. anti-slip rubber sleeve; 13. wire entry hole; 14. rubber support rod; 15. iron wire; 16. guide hole. DETAILED DESCRIPTION

[0023] In order to make the purpose, features, and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the embodiments described below are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0024] Reference Figure 1 , Figure 2 and Figure 3 , a knot pusher for hysteroscopy, comprising a knot pusher tube 1, a top perforation 2 is provided at one end of the knot pusher tube 1, a non-slip rubber sleeve 12 is glued and fixed to the outer surface of the knot pusher tube 1 away from the top perforation 2, an end of the knot pusher tube 1 close to the top perforation 2 is set to a hollow cone, a side through-window 3 is provided on the side of the knot pusher tube 1 close to the top perforation 2, a wire entry hole 13 is provided in the side wall of the knot pusher tube 1 between the top perforation 2 and the cutting pad 4, the length of the side through-window 3 is greater than the sum of the lengths of the two wire entry holes 13, the width of the side through-window 3 is greater than the width of the wire entry hole 13, the top perforation 2, the side through-window 3 and the wire entry hole 13 are all connected with the inside of the knot pusher tube 1, the diameter of the wire entry hole 13 is equal to the diameter of the top perforation 2, the diameter of the top perforation 2 is less than the sum of the diameters of the two surgical lines, and a cutting assembly is provided inside the knot pusher tube 1;

[0025] The cutting assembly includes a cutting pad 4 and a cutting blade 5. A cutting pad 4 is fixed on the inner wall of the push-knot tube 1 between the side through window 3 and the top through hole 2, and a guide hole 16 is opened on the side of the cutting pad 4 away from the side through window 3, and a cutting blade 5 is arranged on the side of the side through window 3 away from the end of the cutting pad 4. The outer edge of the cutting pad 4 is arranged to be an arc matched with the end of the push-knot tube 1, the height of the guide hole 16 is less than the height of the cutting blade 5, and the cutting blade 5 is slidably connected to the inside of the push-knot tube 1, a rubber strut 14 is fixed to the end of the cutting blade 5 away from the top through hole 2, and a plurality of iron wires 15 are equidistantly embedded in the rubber strut 14, a moving connecting block 6 is fixed to the end of the rubber strut 14 away from the cutting blade 5, and a connecting rod 7 is fixed to the end of the moving connecting block 6 away from the cutting pad 4, a pressing rod 8 is fixed to the end of the connecting rod 7 away from the top through hole 2, and the pressing rod 8 extends to the outside of the push-knot tube 1.

[0026] Specifically, when in use, the suture needle with thread passes through the muscle wall in the uterine cavity, and the two ends of the surgical thread are pulled out of the cervical os. The surgical thread at one end is used as a branch line, and a slipknot is tied on the other surgical thread on the branch line. The surgical thread as a branch line is passed through the top perforation 2 into the interior of the knot-pushing tube 1, and then passed through the limiting hole 16 and then passed out from the side through window 3, leaving the ends of the two surgical threads outside the uterine cavity, holding the surgical thread as a branch line, holding the non-slip rubber sleeve 12 to push the knot-pushing tube 1, the knot-pushing tube 1 at the end of the top perforation 2 pushes the slipknot into the uterus to the uterine wall, and then the knot-pushing tube 1 is pulled out, and the surgical thread passing through the side through window 3 is still used as a branch line. Another surgical thread is tied with a slipknot on the branch line, and then the surgical thread is passed through the thread entry hole 13 into the interior of the push-knot tube 1, and then through the limiting hole 16 and out of the side through window 3, and the push-knot tube 1 is pushed to push the slipknot to the upper slipknot position, and the two slipknots form a dead knot, and the pressing rod 8 is pushed, so that the pressing rod 8 drives the rubber support rod 14 to move through the connecting rod 7 and the movable connecting block 6. The rubber support rod 14 is supported by the iron wire 15 inside it, and bends into the curved section of the push-knot tube 1, and at the same time drives the cutting blade 5 to move. After the cutting blade 5 moves, it cuts the surgical thread inside the side through window 3 under the pad of the cutting pad 4.

[0027] As an optimization solution, Figure 2 and Figure 4 As shown, a supporting collar 9 is slidably sleeved on the connecting rod 7, and the outer surface of the supporting collar 9 is fixed on the inner wall of the push-knot tube 1, a spring 10 is sleeved on the connecting rod 7 between the supporting collar 9 and the movable connecting block 6, and the two ends of the spring 10 are respectively fixed on the movable connecting block 6 and the supporting collar 9, a limiting ring plate 11 is provided on the side of the movable connecting block 6 away from the side through window 3, and the outer surface of the limiting ring plate 11 is fixed on the inner wall of the push-knot tube 1, and the limiting ring plate 11 is slidably sleeved on the outside of the spring 10.

[0028] Specifically, when the pressing rod 8 is pressed, the pressing rod 8 drives the connecting rod 7 to move. When the connecting rod 7 moves, it drives the moving connecting block 6 to move and stretch the spring 10. After the moving connecting block 6 drives the cutting blade 5 to move and completes the cutting, the pressing rod 8 is released. At this time, the stretching force on the spring 10 is released. Under the action of the restoring force of the spring 10, the moving connecting block 6 is driven to abut against the limiting ring plate 11, and the cutting blade 5 can be pulled back to the side of the side through window 3.

[0029] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0030] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A knot pusher for hysteroscopy, comprising a knot pusher tube (1), characterized in that: A top through hole (2) is formed at one end of the push-knot tube (1), a side through window (3) is formed at the side of the push-knot tube (1) near the top through hole (2), and a cutting assembly is provided inside the push-knot tube (1); The cutting assembly comprises a cutting pad (4) and a cutting blade (5); the cutting pad (4) is fixed on the inner wall of the push-knot tube (1) between the side through-hole (3) and the top through-hole (2); a guide hole (16) is provided on the side of the cutting pad (4) away from the side through-hole (3); a cutting blade (5) is provided on the side of the side through-hole (3) away from the end of the cutting pad (4); and the cutting blade (5) is slidably connected to the inside of the push-knot tube (1); and the cutting blade (5) is away from the top through-hole (2). A rubber support rod (14) is fixed to one end of the top through hole (2), and a plurality of iron wires (15) are embedded in the rubber support rod (14) at equal intervals. A movable connecting block (6) is fixed to one end of the rubber support rod (14) away from the cutting blade (5), and a connecting rod (7) is fixed to one end of the movable connecting block (6) away from the cutting pad (4). A pressing rod (8) is fixed to one end of the connecting rod (7) away from the top through hole (2), and the pressing rod (8) extends to the outside of the push-knot tube (1).

2. The hysteroscopic knot pusher according to claim 1, characterized in that: An anti-slip rubber sleeve (12) is glued and fixed to the outer surface of the end of the push-knot tube (1) away from the top through hole (2), and the end of the push-knot tube (1) close to the top through hole (2) is configured to be hollow conical.

3. The hysteroscopic knot pusher according to claim 1, characterized in that: A wire entry hole (13) is provided in the side wall of the push-knot tube (1) between the top through hole (2) and the cutting pad (4); the length of the side through window (3) is greater than the sum of the lengths of the two wire entry holes (13); and the width of the side through window (3) is greater than the width of the wire entry hole (13).

4. The hysteroscopic knot pusher according to claim 1, characterized in that: The top through hole (2), the side through window (3) and the wire entry hole (13) are all connected to the inside of the push-knot tube (1); the diameter of the wire entry hole (13) is equal to the diameter of the top through hole (2); and the diameter of the top through hole (2) is smaller than the sum of the diameters of the two surgical threads.

5. The hysteroscopic knot pusher according to claim 1, characterized in that: The outer edge of the cutting pad (4) is arranged in an arc shape to match the end of the push-knot tube (1), and the height of the guide hole (16) is smaller than the height of the cutting blade (5).

6. The hysteroscopic knot pusher according to claim 1, characterized in that: A support collar (9) is slidably sleeved on the connecting rod (7), and the outer surface of the support collar (9) is fixed to the inner wall of the push-knot tube (1). A spring (10) is sleeved on the connecting rod (7) between the support collar (9) and the movable connecting block (6), and two ends of the spring (10) are respectively fixed to the movable connecting block (6) and the support collar (9).

7. The hysteroscopic knot pusher according to claim 6, characterized in that: A limiting ring plate (11) is provided on the side of the movable connecting block (6) away from the side penetration window (3), and the outer surface of the limiting ring plate (11) is fixed on the inner wall of the push-knot tube (1), and the limiting ring plate (11) is slidably sleeved on the outside of the spring (10).

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