Cervical cerclage tightening clamp for loosening cervical cerclage

Abstract

The utility model relates to the technical field of medical instruments, in particular to a tightening clamp for loosening a cervical cerclage line, which is characterized by comprising a first clamping rod and a second clamping rod which are arranged in a V-shaped structure, integrally connected and elastically opened and closed, and a buckling mechanism for buckling and fixing the first clamping rod and the second clamping rod is arranged between the buckling ends of the first clamping rod and the second clamping rod. A clamping mechanism for clamping and fixing the first clamping rod and the second clamping rod is arranged between the middle parts of the first clamping rod and the second clamping rod; and the first clamping rod and the second clamping rod can be clamped and fixed on a tightening section between a line knot and the surface of the cervix uteri on the cerclage line and tighten the cerclage line. The loose cerclage wire is tightened and fixed again through the tightening clamp, so that the purpose of tightening the cervix uteri again is achieved, secondary cerclage operation of a patient is effectively avoided, and abortion and premature delivery of the patient are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a loose cervical cerclage wire tightening clamp. Background Art

[0002] Currently in the field of human pathological pregnancy, cervical incompetence is also known as incomplete closure of the internal cervical os and cervical relaxation. For patients with cervical incompetence during pregnancy, it is easy to induce early pregnancy miscarriage or late pregnancy premature birth. At present, cervical cerclage has a definite therapeutic effect on such patients. Most of the commonly used cerclage methods use silk thread or coil for cerclage to achieve the therapeutic purpose of tightening the cervix. However, both methods have the phenomenon of loose cerclage wire in some patients due to the disappearance of cervical edema after surgery, and loose cerclage wire in some patients due to the failure of cerclage wire to be tightened during surgery. The above situations can lead to the re-bulging of amniotic sac due to loose cerclage wire, inducing miscarriage and premature birth. Emergency cerclage wire removal and secondary cerclage surgery are required when necessary. In view of this, this problem has been studied in depth, resulting in this case. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a loose cerclage wire tightening clamp which can be used to tighten and fix the loose cerclage wire again, so as to achieve the purpose of re-tightening the cervix, effectively avoid the patient from undergoing a secondary cerclage operation, and reduce the occurrence of miscarriage and premature birth in such patients.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows: a loose cervical cerclage wire tightening clamp, comprising a first clamp rod and a second clamp rod arranged in a V-shaped structure, integrally connected and elastically opened and closed, a clamping mechanism for buckling and fixing the first clamp rod and the second clamp rod is provided between the buckling ends of the first clamp rod and the second clamp rod, and a clamping mechanism for clamping and fixing the first clamp rod and the second clamp rod is provided between the middle parts of the first clamp rod and the second clamp rod, and the first clamp rod and the second clamp rod can be clamped and fixed on the tightening section of the cerclage wire between the knot and the cervical surface to tighten the cerclage wire.

[0005] Furthermore, the snap-fitting mechanism includes matching snap-fitting hooks and snap-fitting tongues. An insert block is fixedly provided on the inner side of the snap-fitting end of the first clamp rod, and a snap-fitting hook is fixedly provided on the end of the insert block. A slot is provided at the snap-fitting end of the second clamp rod, and a snap-fitting tongue is fixed in the slot. The insert block is inserted into the slot and the snap-fitting hook is snap-fitted and fixed with the snap-fitting tongue.

[0006] Furthermore, the insert block is bent in an arc shape, and the buckle hook is inclined toward the inner side of the first clamping rod.

[0007] Furthermore, outer surfaces on both sides of the buckling tongue are arc-shaped surfaces.

[0008] Furthermore, the clamping mechanism includes a first clamping plate and a second clamping plate. The first clamping plate is fixedly provided on the middle part of the inner side of the first clamping rod, and an insertion hole is provided in the middle part of the second clamping rod. The second clamping plate is fixedly provided in the insertion hole. A plurality of clamping teeth are fixedly provided on the one side surface of the first clamping plate and the second clamping plate. The clamping teeth include a guiding inclined surface and a blocking inclined surface. The first clamping plate is inserted into the insertion hole and the clamping teeth of the first clamping plate are clamped and fixed with the clamping teeth of the second clamping plate.

[0009] Furthermore, the inclination direction of the guiding slope is consistent with the clamping direction between the first clamping plate and the second clamping plate, and the inclination direction of the blocking slope and the clamping direction between the first clamping plate and the second clamping plate form a right angle or an acute angle.

[0010] Furthermore, the first clamping rod and the second clamping rod are both curved in an arc shape and have the same bending direction.

[0011] Furthermore, the inner side surface of the first clamping rod is the first clamping surface, and the inner side surface of the second clamping rod is the second clamping surface.

[0012] Furthermore, a through hole is provided in the connection between the first clamping rod and the second clamping rod.

[0013] Furthermore, a first fixing column matched with a first fixing groove on the clip applier is fixedly provided at the outer side of the buckling end of the first clamping rod, and a second fixing column matched with a second fixing groove on the clip applier is fixedly provided at the buckling end of the second clamping rod.

[0014] From the above description, it can be seen that the utility model provides a loose cervical cerclage line tightening clamp, which has the following beneficial effects: through the fastening and fixing of the fastening mechanism, and through the clamping and fixing of the clamping mechanism, a double fixing effect can be achieved on the stable connection between the first clamp rod and the second clamp rod, so that the first clamp rod and the second clamp rod are clamped and fixed on the tightening section of the cerclage line, so that the tightening clamp is not easy to detach from the cerclage line, and is clamped between the knot and the surface of the cervix, so that the knot and the cervix can be used to support the tightening clamp well, and the loose cerclage line can be tightened stably at the knot, so as to re-tighten the cerclage line, and the loose cerclage line is tightened and fixed again by the tightening clamp, so as to achieve the purpose of re-tightening the cervix, effectively avoiding patients from undergoing secondary cerclage surgery, and reducing the occurrence of miscarriage and premature birth in such patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a three-dimensional structural schematic diagram of a loose cervical cerclage wire tightening clamp.

[0016] Figure 2 It is a structural schematic diagram of the clamping mechanism.

[0017] Figure 3 for Figure 2 A local enlarged schematic diagram of point A in the middle.

[0018] Figure 4 The utility model is a schematic diagram of the use state of a loose cervical cerclage wire tightening clamp.

[0019] In the figure: 1-first clamping rod; 11-insertion block; 12-first clamping surface; 13-first fixing column; 2-second clamping rod; 21-slot; 22-second clamping surface; 23-second fixing column; 3-fastening mechanism; 31-fastening hook; 32-fastening tongue; 321-arc surface; 4-clamping mechanism; 41-first clamping plate; 42-second clamping plate; 43-insertion hole; 44-clamping tooth; 441-guide slope; 442-blocking slope; 5-through hole; 6-cerclage wire; 61-tightening section; 62-wire knot; 7-cervix. DETAILED DESCRIPTION

[0020] The present invention is further described below through specific implementation methods.

[0021] like Figures 1 to 4 As shown, a loose cervical cerclage wire tightening clamp described in the utility model comprises a first clamp rod 1 and a second clamp rod 2 which are arranged in a V-shaped structure, integrally connected and elastically open and close, a fastening mechanism 3 for fastening and fixing the two is provided between the fastening ends of the first clamp rod 1 and the second clamp rod 2, a clamping mechanism 4 for fastening and fixing the two is provided between the middle parts of the first clamp rod 1 and the second clamp rod 2, the first clamp rod 1 and the second clamp rod 2 can be clamped and fixed on the tightening section 61 between the knot 62 and the surface of the cervix 7 on the cerclage wire 6 to tighten the cerclage wire 6.

[0022] When in use, the loose cerclage wire 6 can be tightened from the knot 62 on the cerclage wire 6 so that a tightening section 61 is formed on the cerclage wire 6 near the knot 62. Since the cervix 7 is in the body, the use of a clamp applier and the setting of a V-shaped structure facilitate the clamp applier to clamp the tightening clamp and extend it into the body, and the first clamp rod 1 and the second clamp rod 2 are respectively arranged on two symmetrical sides of the tightening section 61, and then the clamp applier is operated and clamped so that the first clamp rod 1 and the second clamp rod 2 are embedded, and the buckling and fixing of the buckling mechanism 3 and the clamping and fixing of the clamping mechanism 4 can play a double fixing effect on the stable connection between the first clamp rod 1 and the second clamp rod 2, so that the first clamp rod The rod 1 and the second clamp rod 2 are clamped and fixed on the tightening section 61 of the cerclage wire 6, so that the tightening clamp is not easy to detach from the cerclage wire 6, and is clamped between the knot 62 and the surface of the cervix 7, so that the knot 62 and the cervix 7 can be used to well support the tightening clamp, and the loose cerclage wire 6 at the knot 62 can be stably tightened to re-tighten the cerclage wire 6, and the loose cerclage wire 6 is tightened and fixed again by the tightening clamp to achieve the purpose of re-tightening the cervix 7, effectively avoiding patients from undergoing secondary cerclage surgery, and reducing the occurrence of miscarriage and premature birth in such patients. In addition, in actual clinical operations, tightening clamps of various widths and sizes can be produced, and multiple tightening clamps can also be used to better adapt to the clamping and fixing of tightening sections 61 of different lengths.

[0023] The snapping mechanism 3 includes a matching snapping hook 31 and a snapping tongue 32. An insert block 11 is fixedly provided at the inner side of the snapping end of the first clamping rod 1, and the snapping hook 31 is fixedly provided at the end of the insert block 11. A slot 21 is provided at the snapping end of the second clamping rod 2, and the snapping tongue 32 is fixed in the slot 21. The insert block 11 is inserted into the slot 21 to snap the snapping hook 31 and the snapping tongue 32 together. When snapping, the snapping hook 31 can produce a certain elastic deformation to smoothly snap onto the snapping tongue 32, thereby realizing the snapping fixation between the snapping ends of the first clamping rod 1 and the second clamping rod 2. In addition, the insert block 11 is arc-shaped, the snapping hook 31 is inclined toward the inner side of the first clamping rod 1, and the outer surfaces of both sides of the snapping tongue 32 are both arc-shaped surfaces 321.

[0024] The clamping mechanism 4 includes a first clamping plate 41 and a second clamping plate 42. The first clamping plate 41 is fixedly provided at the middle part of the inner side of the first clamping rod 1. A socket 43 is provided at the middle part of the second clamping rod 2. The second clamping plate 42 is fixedly provided in the socket 43. A plurality of clamping teeth 44 are fixedly provided on one side surface of the first clamping plate 41 and the second clamping plate 42. The clamping teeth 44 include a guiding slope 441 and a blocking slope 442. The first clamping plate 41 is inserted into the socket 43 and the clamping teeth 44 of the first clamping plate 41 are clamped and fixed with the clamping teeth 44 of the second clamping plate 42. The inclination direction of the guiding slope 441 is consistent with the clamping direction between the first clamping plate 41 and the second clamping plate 42. The inclination direction of the blocking slope 442 forms a right angle or an acute angle with the clamping direction between the first clamping plate 41 and the second clamping plate 42.

[0025] The first clamp rod 1 and the second clamp rod 2 are both arc-shaped and have the same bending direction. The inner surface of the first clamp rod 1 is the first clamping surface 12, and the inner surface of the second clamp rod 2 is the second clamping surface 22. When the first clamp rod 1 and the second clamp rod 2 are embedded and fixed by the buckling of the buckling mechanism 3 and the clamping of the clamping mechanism 4, the first clamping surface 12 can maintain abutment with the second clamping surface 22, so that the tightening clamp can be stably clamped on the tightening section 61 of the cerclage line 6. A through hole 5 is provided in the connection between the first clamp rod 1 and the second clamp rod 2. A first fixing column 13 matched with the first fixing groove on the clamp applier is fixed at the outer side of the buckling end of the first clamp rod 1, and a second fixing column 23 matched with the second fixing groove on the clamp applier is fixed at the buckling end of the second clamp rod 2, which can further facilitate the clamping operation of the clamp applier on the tightening clamp.

[0026] The above are only some specific implementation methods of the utility model, but the design concept of the utility model is not limited to this. Any non-substantial changes to the utility model using this concept shall be deemed as an infringement of the protection scope of the utility model.

Claims

1. A loose cervical cerclage wire tightening clamp, characterized in that: It comprises a first clamping rod and a second clamping rod which are arranged in a V-shaped structure, integrally connected and elastically open and close; a fastening mechanism for fastening and fixing the first clamping rod and the second clamping rod is provided between the fastening ends thereof; a clamping mechanism for fastening and fixing the first clamping rod and the second clamping rod is provided between the middle parts thereof; the first clamping rod and the second clamping rod can be clamped and fixed on a tightening section of a cerclage wire between the knot and the surface of the cervix to tighten the cerclage wire.

2. A loose cervical cerclage wire tightening clamp according to claim 1, characterized in that: The snap-fitting mechanism comprises matching snap-fitting hooks and snap-fitting tongues; an insert block is fixedly provided at the inner side of the snap-fitting end of the first clamp rod, and the snap-fitting hook is fixedly provided at the end of the insert block; a slot is provided at the snap-fitting end of the second clamp rod, and the snap-fitting tongue is fixedly provided in the slot; the insert block is inserted into the slot so that the snap-fitting hook and the snap-fitting tongue are snap-fitted and fixed.

3. A loose cervical cerclage wire tightening clamp according to claim 2, characterized in that: The insert block is in an arc-shaped bend, and the buckle hook is inclined toward the inner side of the first clamping rod.

4. A loose cervical cerclage wire tightening clamp according to claim 2, characterized in that: The outer surfaces on both sides of the buckling tongue are both arc-shaped surfaces.

5. The loose cervical cerclage wire tightening clamp according to claim 1, characterized in that: The clamping mechanism includes a first clamping plate and a second clamping plate, the first clamping plate is fixedly provided at the middle inner side of the first clamping rod, a socket is provided at the middle of the second clamping rod, the second clamping plate is fixedly provided in the socket, a plurality of clamping teeth are fixedly provided on one side surface of the first clamping plate and the second clamping plate, the clamping teeth include a guiding inclined surface and a blocking inclined surface, the first clamping plate is inserted into the socket and the clamping teeth of the first clamping plate are clamped and fixed with the clamping teeth of the second clamping plate.

6. A loose cervical cerclage wire tightening clamp according to claim 5, characterized in that: The inclination direction of the guiding inclined surface is consistent with the clamping direction between the first clamping plate and the second clamping plate, and the inclination direction of the blocking inclined surface and the clamping direction between the first clamping plate and the second clamping plate form a right angle or an acute angle.

7. The loose cervical cerclage wire tightening clamp according to claim 1, characterized in that: The first clamping rod and the second clamping rod are both curved in an arc shape and have the same bending direction.

8. The loose cervical cerclage wire tightening clamp according to claim 1, characterized in that: The inner side surface of the first clamping rod is a first clamping surface, and the inner side surface of the second clamping rod is a second clamping surface.

9. The loose cervical cerclage wire tightening clamp according to claim 1, characterized in that: A through hole is provided in the connection between the first clamping rod and the second clamping rod.

10. The loose cervical cerclage wire tightening clamp according to claim 1, characterized in that: A first fixing column matched with a first fixing groove on the clip applier is fixedly arranged at the outer side of the buckling end of the first clamping rod, and a second fixing column matched with a second fixing groove on the clip applier is fixedly arranged at the buckling end of the second clamping rod.

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