Special visual needle holder for cerclage of cervix uteri

Abstract

The invention relates to the technical field of needle holders, and discloses a visual needle holder special for cervical cerclage, which comprises a needle clamping mechanism, the needle clamping mechanism comprises an outer clamping body and an inner clamping body which are symmetrical, and the hinging part of the inner clamping body is positioned in the hinging part of the outer clamping body to form a crossed shear shape; the visual endoscope clip further comprises a visual mechanism, the visual mechanism comprises a fixing frame connected to the outer side of the hinged portion of the outer clip body and a long-strip-shaped hiding cavity formed in the handle portion of the outer clip body, an endoscope rod is inserted into the fixing frame, and a transmission line body of the endoscope rod can be hidden in cooperation with the hiding cavity. Compared with the prior art, the device can display the operation position, overcomes the defects that during transvaginal cervix suturing operation, the cervix is difficult to expose or a needle inserting position is blocked after a needle holder enters the vagina, reduces the operation risk of a patient, meanwhile, can greatly shorten the operation time, and improves the operation efficiency. The operation completion efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of needle holder technology, specifically a visual needle holder for cervical cerclage. Background Technology

[0002] Transvaginal cervical cerclage is a core surgical procedure for the clinical treatment of cervical insufficiency. By cerclaging and suturing the cervix, it effectively prevents miscarriage or premature birth in mid-to-late pregnancy, and its success rate directly affects the prognosis of mother and baby.

[0003] Currently, this procedure is usually performed under epidural anesthesia. The patient is placed in the lithotomy position. After exposing the cervix through a vaginal speculum, the surgeon uses a toothless ovum forceps to clamp the cervical tissue and then performs suturing using a conventional needle holder. However, in existing techniques, the conventional needle holder is not well-suited to the vaginal anatomy, resulting in significant defects in the surgical procedure, specifically:

[0004] Difficulty in exposing the field of vision affects the accuracy of suturing. The vaginal cavity is narrow and the space is limited. After the conventional needle holder is inserted into the vagina, its metal rod can easily obstruct the surgeon's view, especially when adjusting the angle of the needle holder or holding the suture needle. This increases the risk of cervical tissue damage, rupture of the amniotic sac, and unsatisfactory needle placement.

[0005] The operation is inefficient and takes a long time. Due to the unclear field of vision, the surgeon has to rely on tactile feedback and experience to judge the direction of the sutures. The long operation not only increases the patient's anesthesia risk, but also causes postoperative lower abdominal distension, vaginal edema and discomfort, obvious uterine contractions, and increased infection due to the long traction of the cervix and vaginal mucosa, which increases the risk of miscarriage or premature birth.

[0006] Therefore, there is an urgent need for a dedicated visual needle holder for cervical cerclage to solve the above problems. Summary of the Invention

[0007] In order to overcome the above-mentioned technical problems, the purpose of this invention is to provide a visual needle holder for cervical cerclage, so as to solve the problems mentioned in the background art, such as the narrow and long vaginal cavity with limited space, the metal rod of conventional needle holders easily obstructing the surgeon's vision after entering the vagina, low operation efficiency, long operation time, and high surgical risk due to unclear vision, requiring the surgeon to rely on tactile feedback and experience to judge the direction of sutures.

[0008] The present invention provides the following technical solution: a visual needle holder for cervical cerclage, comprising a needle clamping mechanism, wherein the needle clamping mechanism comprises an outer clamping body and an inner clamping body in a symmetrical shape, and the hinged part of the inner clamping body is located inside the hinged part of the outer clamping body, forming a cross-scissor shape;

[0009] It also includes a viewing mechanism, which includes a fixing frame connected to the outside of the hinge portion of the outer clamp and a long, narrow hidden chamber opened in the handle of the outer clamp.

[0010] Additionally, the endoscope rod, which is inserted into the through hole of the fixation frame and fixed, takes pictures of the clamping areas of the outer clamp and the inner clamp, and the wire of the endoscope rod passes through the endoscope rod and is connected to an external display device to display images of the surgical area.

[0011] To achieve the above technical solution, an endoscope rod is inserted into a fixed frame, and a hidden chamber is used to hide the transmission line of the endoscope rod, thereby directly displaying the surgical area on an external display device. Compared with the prior art, this device can display the surgical position, making it easier for medical staff to hold suture needles, reducing the surgical risk for patients, and shortening the operation time and increasing the efficiency of the operation.

[0012] As a further improvement to the present invention, the clamping area of ​​the fixing frame facing the outer clamp and the inner clamp is designed with an arc surface.

[0013] The above technical solution improves the smoothness of the insertion side of the fixation device, thus avoiding scratches to the patient's surgical area.

[0014] As a further improvement to the present invention, the fixing frame is provided with a support seat connected to the outer clamp on the insertion side of the endoscope rod, which supports the endoscope rod portion extending from the fixing frame.

[0015] The above technical solution improves the stability of endoscope rod placement.

[0016] As a further improvement to the present invention, a T-shaped rubber sleeve is inserted into the insertion side of the fixing frame for compression and limiting, the endoscope rod is inserted into the through hole of the rubber sleeve, and the surface of the endoscope rod is in close contact with the inner wall of the through hole of the rubber sleeve.

[0017] The above technical solution improves the stability of the endoscope rod inserted into the fixation frame, while the elasticity of the rubber sleeve can buffer and protect the surface of the endoscope rod.

[0018] As a further improvement to the present invention, the insertion side of the through hole of the rubber sleeve is expanded outward, so that the through hole as a whole is funnel-shaped.

[0019] The above technical solution facilitates the insertion of the endoscope rod into the rubber sleeve to form a compression limit.

[0020] As a further improvement to the present invention, the hidden chamber is designed to be open, and the opening of the hidden chamber is uniformly raised along the handle of the outer clamp to form a blocking part, which blocks the endoscope rod in the hidden chamber.

[0021] The above technical solution facilitates the removal and insertion of the endoscope rod filament from the hidden chamber.

[0022] As a further improvement to the present invention, the adjacent blocking portions are designed in a staggered manner.

[0023] The above technical solution improves the blocking and stabilizing effect of the blocking part on the hidden chamber line.

[0024] As a further improvement to the present invention, the endoscope rod is selected to have a light source to provide auxiliary illumination to the operating area.

[0025] The above technical solutions improve the visibility of the surgical area.

[0026] As a further improvement to the present invention, the length of the endoscope rod is less than or equal to the horizontal length from the fixing frame to the clamping area of ​​the outer clamp and the inner clamp.

[0027] The above technical solution avoids excessive extension of the endoscope rod, preventing interference with the clamping process of the external and internal clamps.

[0028] As a further improvement to the present invention, the lens surface of the endoscope rod contains a fluorine / silicone-based polymer surfactant to form an anti-fog layer.

[0029] The above technical solution avoids fogging at the endoscope lens during use. At the same time, the anti-fog layer is highly compatible, adaptable to various disinfection methods, cost-effective, and its biosafety has been verified through long-term clinical trials.

[0030] The technical effects and advantages of this invention are as follows:

[0031] 1. The present invention uses an endoscope rod inserted into a fixed frame, and with the help of a hidden chamber, the transmission line of the endoscope rod can be hidden, thereby directly displaying the surgical area on an external display device.

[0032] 2. Compared with the prior art, this device can display the surgical position, which is convenient for medical staff to hold the suture needle, reduce the surgical risk for patients, and shorten the operation time and increase the efficiency of the operation. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1This is a top-view perspective view of the overall structure of the present invention in its open state.

[0035] Figure 2 This is a top-view perspective view of the overall structure of the present invention in the clamping state.

[0036] Figure 3 This is a top-view perspective view of the exploded state of the visible mechanism structure of the present invention.

[0037] Figure 4 This is a partial top-view perspective view of the hidden chamber structure of the present invention.

[0038] The names represented by the part numbers in the above diagram are as follows:

[0039] 100. Needle clamping mechanism; 110. Outer clamp; 111. Inner clamp; 200. Visual mechanism; 210. Fixing frame; 211. Hidden chamber; 212. Endoscope rod; 213. Support; 214. Rubber sleeve; 215. Blocking part; Detailed Implementation

[0040] The technical solutions of the present invention will now be clearly and completely described with reference to the accompanying drawings.

[0041] Example:

[0042] Refer to the attached diagram in the instruction manual. Figure 1-4 The present invention provides a visual needle holder for cervical cerclage, which mainly consists of a needle clamping mechanism 100 and a visual mechanism 200.

[0043] In the needle clamping mechanism 100, the core clamping components are the outer clamp 110 and the inner clamp 111, which are made of titanium alloy and have undergone surface sandblasting treatment, combining lightweight and anti-slip performance. The inner clamp 110 and the outer clamp 111 have a cross-scissor design and achieve smooth rotation through medical-grade bearings. The opening angle is 0°-45° (corresponding to the clamping end opening width of 0-8mm, suitable for 0.8-1.2mm circumferential needles).

[0044] The outer clamp 110 and the inner clamp 111 have serrated interlocking grooves (tooth height 0.3mm, tooth spacing 0.5mm) on their clamping surfaces to ensure that the surgical needle does not slip.

[0045] The visualization mechanism 200 is mainly used for visualization of the surgical area. It uses a self-light source endoscope pole 212 with a 1 / 4-inch CMOS sensor, a 90° field of view (wide-angle design to reduce blind spots), and a depth of field of 5-50mm (covering the operating distance of cervical cerclage surgery). At the same time, an anti-fog film containing fluorine / silicone-based polymer surfactant is attached to the lens surface (anti-fog duration ≥4h). The endoscope pole can withstand high temperature and high pressure sterilization at 134℃ (compliant with ISO 17665 standard).

[0046] The fixing frame 210, the support seat 213, and the outer clamp 110 are the same component and are integrally formed. The forward side arc surface of the fixing frame 210 is curved, and the through hole axis makes an angle of 30° with the clamping end plane (to ensure that the lens axis is aligned with the area 5mm in front of the tip of the surgical needle). The top of the support seat 213 has a V-shaped groove to support the extended section of the endoscope rod 212 and reduce the radial runout of the endoscope rod 212 (to ensure that the image is jitter-free).

[0047] The rubber sleeve 214 is a disposable component made of medical-grade materials. The funnel-shaped guide at the through-hole inlet and the middle diameter are interference-fitted with the endoscope rod 212. It is embedded in the groove of the fixing frame 210 to achieve axial limitation.

[0048] The hidden chamber 211 is opened in the handle of the inner clamp 110. The opening in the groove has eight staggered blocking parts 215 that are spaced apart, which block and limit the line of the endoscope rod 212.

[0049] The assembly process is performed in a sterile environment after disinfection:

[0050] Step 1: Press the rubber sleeve 214 into the through hole of the fixing bracket 210 (ensure it is fully embedded);

[0051] Step 2: Insert the endoscope rod 212 into the funnel-shaped inlet of the rubber sleeve until the end face of the lens fits against the V-groove of the support 213. Because the through hole of the rubber sleeve 214 is slightly smaller than the outer diameter of the endoscope rod 212, it compresses the rubber sleeve 214, thus limiting the stainless steel frame 210, the deformed rubber sleeve 214, and the endoscope rod 212.

[0052] Step 3: The endoscope rod 212 cable passes through the hidden chamber 211 and the end of the cable is connected to the external display device.

[0053] Intraoperative procedures:

[0054] The surgeon holds the handle of the inner clamp 110 (with anti-slip texture in the grip area), aligns the endoscope lens with the internal cervical os, and observes the surgical area through the monitor, centering the cervical ligation site.

[0055] In the description of this specification, the references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A visual needle holder for cervical cerclage, characterized in that: it comprises a needle clamping mechanism (100) comprising a symmetric outer clamping body (110) and an inner clamping body (111), and the inner clamping body (111) is hinged inside the hinged part of the outer clamping body (110) to form a cross-shaped shears; it further comprises a visual mechanism (200) comprising a fixed frame (210) connected to the outside of the hinged part of the outer clamping body (110) and a hidden chamber (211) in the form of a long strip opened in the handle of the outer clamping body (110); and an endoscope rod (212) inserted into the through hole of the fixed frame (210) to take pictures towards the clamping area of the outer clamping body (110) and the inner clamping body (111), and the wire of the endoscope rod (212) is connected to an external display device to display the image of the operation area. The fixed frame (210) is arc-shaped towards the clamping area of the outer clamping body (110) and the inner clamping body (111). The fixed frame (210) is provided with a bearing seat (213) connected to the outer clamping body (110) towards the insertion side of the endoscope rod (212) to support the part of the endoscope rod (212) extending out of the fixed frame (210). The insertion side of the fixed frame (210) is provided with a T-shaped rubber sleeve (214) for extrusion limiting, and the endoscope rod (212) is inserted into the through hole of the rubber sleeve (214), and the surface of the endoscope rod (212) is tightly attached to the inner wall of the through hole of the rubber sleeve (214).

2. A visual needle holder for cervical cerclage according to claim 1, characterized in that: The insertion side of the through hole of the rubber sleeve (214) is expanded outwardly, so that the through hole as a whole is funnel-shaped.

3. A visual needle holder for cervical cerclage according to claim 2, characterized in that: The hidden chamber (211) is designed as a whole with an open mouth, and the open mouth of the hidden chamber (211) is uniformly protruded along the handle of the outer clamping body (110) to form a blocking part (215) to block the wire of the endoscope rod (212) in the hidden chamber (211).

4. The visual needle holder for cervical cerclage according to claim 1, wherein: The adjacent blocking parts (215) are designed in a staggered manner.

5. A visual needle holder for cervical cerclage according to claim 4, characterized in that: The endoscope rod (212) is selected with a light source for auxiliary lighting of the operation area.

6. A visual needle holder for cervical cerclage according to claim 1, characterized in that: The length of the mirror rod of the endoscope rod (212) is less than or equal to the horizontal length from the fixed frame (210) to the clamping area of the outer clamping body (110) and the inner clamping body (111).

7. A visual needle holder for cervical cerclage according to claim 6, characterized in that: The lens surface of the endoscope rod (212) contains fluorine / silicon-based polymer surfactant to form an anti-fog layer.

8. A visual needle holder for cervical cerclage according to claim 1, characterized in that: ​ 9. A visual needle holder for cervical cerclage according to claim 8, characterized in that: ​ 10. A visual needle holder for cervical cerclage according to claim 9, characterized in that: ​

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