CN201602812U - Needle holder used under laparoscopy - Google Patents

Abstract

The utility model relates to a needle holder used under a laparoscope. The aim is that the provided needle holder should have the characteristics of simple structure, flexible and convenient operation, and not easy to damage surrounding tissues. The technical solution proposed by the utility model is: a needle holder used under laparoscopy, which includes a body seat with a slender and hollow fixed sleeve, the front end of the body seat is provided with a needle clamping part, and the rear end is hinged with an operating handle. It is characterized in that: the pin clamping part includes a fixed jaw and a movable jaw arranged at the front end of the fixed sleeve, and the movable jaw is movably hinged on the fixed jaw; a pull rod is provided on the body seat, and one end of the pull rod is pulled from the fixed sleeve After the cavity passes through, it is hinged with the movable jaw, and the other end is hinged with the operating handle through the connecting piece. One end of the connecting piece is hinged with the operating handle, and the other end is hinged with the hinged joint at the end of the pull rod. The fixed jaws and the movable jaws are side-curved, and there is an inclination angle between the occlusal surfaces of the fixed jaws and the movable jaws that coincide with each other and the main shaft of the needle holder.

Description

Needle holder used under laparoscopy

technical field

The utility model relates to a clinical medical operation instrument, in particular to a needle holder used under a laparoscope.

Background technique

Needle holders are essential medical devices for suturing wounds in surgical operations; the needle holders currently used clinically have a scissor-like structure at the front end of the needle holder, that is, the two clamping units are in the form of scissors. hinged. The needle clamping of this scissor-type needle holder is realized by opening and closing the left and right sides of the scissor-type needle holder, so when performing suture operations in the body cavity, care must be taken; Pulling out is carried out alternately. Not only is it easy to accidentally injure the soft tissue around the wound during suturing, but also a large surgical incision needs to be reserved on the body surface in advance to facilitate the entry and exit of the instrument and the completion of the left and right opening and closing actions of the needle holder. Because the maximum laparoscopic incision is only about 1 cm, and the instruments used need a certain length, this scissor needle holder is not suitable for use under laparoscopy.

With the improvement of medical technology level, laparoscopic technology is gradually popularized, and the suture under laparoscope is indispensable. At present, the design of suture instruments under laparoscope is relatively rough, generally straight needles, which exist in the two-dimensional image of laparoscope. The blind area of vision is not conducive to operation; and most of them are hand-held, which is contrary to conventional surgical operations. It is inflexible and inconvenient to use, and the long-term operation accelerates fatigue. It cannot meet the surgical suturing requirements of laparoscopic fine operation in modern medicine, and there is no patent public.

Utility model content

The purpose of the utility model is to provide an improvement of a needle holder. The needle holder should have the characteristics of simple structure, flexible and convenient operation, and not easy to damage surrounding tissues.

The technical solution proposed by the utility model is: a needle holder used under laparoscopy, including a body seat with a slender and hollow fixed sleeve, the front end of the body seat is provided with a needle clamping part, and the rear end is hinged with an operating handle. It is characterized in that: the needle clamp part includes a fixed jaw and a movable jaw arranged at the front end of the fixed sleeve, and the movable jaw is movably hinged on the fixed jaw; the body seat is provided with a pull rod, and the pull rod After one end passes through the inner cavity of the fixed sleeve, it is hinged with the movable jaw, and the other end is hinged with the operating handle through the connecting piece.

One end of the connecting piece is hinged to the operating handle, and the other end is hinged to the hinge at the end of the pull rod.

The fixed jaw and the movable jaw are side-curved, and there is an inclination angle between the occlusal surface of the fixed jaw and the movable jaw and the main shaft of the needle holder, which overcomes the blind area of the laparoscopic field of view.

The said occlusal surface is formed with horizontal fine strip teeth which increase friction.

The operating handle is made into two ring shapes, which are similar to instruments such as conventional surgical vascular forceps, and are convenient for surgeons to perform skilled operations on clamping needles and suturing.

The lower part of the operating handle is also provided with a locking tooth for limiting the operating handle.

The rear end of the fixed sleeve is formed with a water injection port, the front end has a water outlet to communicate with the outside world, and the two ends are connected through the inner cavity of the fixed sleeve, which can be washed during the operation to keep the front end of the needle holder clean and prevent Pollution of blood, etc.; the water injection port is equipped with a rubber cap.

The working principle of the utility model is: two mutually hinged fixed jaws and movable jaws are used to form a clamping part 1 which can clamp sewing needles; Movement, so it has the characteristics of a small working surface and will not affect its surrounding tissues. And the occlusal surface between the fixed jaw and the movable jaw on the clamping part has a certain inclined angle to the main shaft of the needle holder, so when the clamped sewing needle is at different positions of the occlusal surface, different The needle holding angle (relative to the main axis of the needle holder). Simultaneously, because the sewing needle body is also a kind of shape such as a curved hook, so the position points of being clamped are different, and the needle point of the sewing needle points to be also different. In this way, the doctor during the operation can adjust the entry direction of the needle gripping part by operating the handle, so that the sewing needle can cut into different positions on the occlusal surface at various angles, and be clamped by the fixed jaws and movable jaws to achieve any angle. Hold the needle, and can overcome the laparoscopic blind spot, which is beneficial to the operation under the microscope. In addition, the occlusal surface between the fixed jaws and the movable jaws is made with horizontal thin strip teeth to increase friction, so as to clamp the sewing needle more firmly. There is also a locking tooth on the operating handle that can be used as a limit, so that the handle can be self-locked and not released after clamping, so that the surgeon can focus on the needle site.

When using the utility model, the operating handle is first opened outwards, and the hinged connecting piece on the operating handle is stretched, so the hinged joint is pulled forward; thereby pushing the pull rod to make the movable jaw and the fixed jaw depart from each other; Place the corresponding type of sewing needle on the fixed jaw, and close the operating handle inwardly. At this time, the hinged connecting piece on the operating handle is pressed down, driving the hinged head back, thereby pulling the pull rod to make the movable jaw press against the fixed jaw. until it is compressed tightly, trapping the needle in between.

The beneficial effects of the utility model are:

1. This product is suitable for laparoscopic suturing operations in the deep thoracoabdominal cavity or in small surgical fields. The side curved design of the front end avoids the shortcomings of existing straight needle holders that must make the needle tilt, and overcomes the two-dimensional imaging of the laparoscope. The resulting blind area of vision.

2. The design of the operating handle is similar to that of conventional surgical vascular forceps, which is convenient for surgeons to perform skilled operations on needle clamping and suturing.

3. The operation time is shortened, the operation quality is improved, the pain of the patient is relieved, and the occurrence of postoperative complications is reduced.

4. The structure of the product is simple, the operation is flexible and convenient, which is conducive to popularization and application.

5. Can be sterilized repeatedly, saving cost.

Description of drawings

Fig. 1 is the front view structural representation of the utility model;

Fig. 2 is a schematic diagram of the use state of the utility model;

Fig. 3 is a schematic diagram of the enlarged structure of part C in Fig. 2;

Fig. 4 is a schematic diagram of the enlarged structure of part B in Fig. 2;

Fig. 5 is a schematic diagram of an enlarged structure of the locking tooth in the direction A of Fig. 2;

Fig. 6 is a schematic diagram of a partially enlarged structure along the direction D in Fig. 1 .

Detailed ways

The technical scheme of the utility model is further described in conjunction with the accompanying drawings of the description.

As shown in the figure, a needle holder used under laparoscopy is made of medical metal material that can be used repeatedly for disinfection. It is provided with a clamping part 1 and a hinged operating handle 3 at the rear end. The operating handle is similar to the handle of a traditional scissors-type needle holder, and is a left and right opening and closing pliers handle; the inner tail ends of the left and right pliers handles 12, 13 are respectively provided with matching latches 14, and the latches are meshed. It can only move in one direction, so that the operating handle can only be opened and closed inwardly and not outwardly, so as to prevent the accidental loosening or dislocation of the suture needle, which is beneficial for the surgeon to focus more on the needle site.

The needle clamping part 1 is composed of fixed jaws 9 and movable jaws 10 which are movably connected by rivets. The fixed jaws 9 are arranged on the front end of a slender and hollow fixed sleeve 2, and the outer diameter of the fixed sleeve and the fixed clamp The claws have the same outer diameter.

The fixed jaw 9 and the movable jaw 10 are side-curved (as shown in Figure 6), and there is an inclination angle between the occlusal surface 11 of the fixed jaw and the movable jaw and the main shaft of the needle holder; When the needle is at different positions on the occlusal surface, different needle holding angles (relative to the main axis of the needle holder) can appear. In this way, the doctor during the operation can adjust the entry direction of the needle clamping part by operating the handle to make the needle It cuts into different positions on the occlusal surface at various angles, and is clamped by fixed jaws and movable jaws to achieve needle holding at any angle.

The occlusal surfaces 11 of the fixed jaws 9 and the movable jaws 10 are formed with horizontal thin strip teeth that increase friction, so as to clamp the sewing needle more firmly.

The main body seat 5 is provided with a pull rod 4, the pull rod is arranged in the inner cavity of the fixed sleeve 2, one end of the pull rod passes through the inner cavity of the fixed sleeve 2, and is hinged with the movable jaw 10, and the other end passes through the connecting piece 7, 8 is hinged with operating handle 3.

One end of the connecting piece 7,8 is hinged with the left and right pincer handles 12,13, and the other end is hinged with the hinged joint 6 at the end of the pull rod. Under the action of the operating handle, the hinged head can push the pull rod to move forward and backward, so that the movable jaw 10 can rotate upward around the axis of the rivet with the influence of the drawing wire 4, and the rotation angle is in the range of 0-60 degrees.

The rear end of the fixed sleeve 2 is formed with a water injection port 15 communicating with the external suction device, and the front end is formed with a water outlet 17 connected to the water inlet; The cavity 16 between them communicates. During the operation, the water injection port can be connected to a water pipe, and the flushing liquid is injected from the water injection port, and the flushing liquid is sprayed out from the water outlet along the cavity 16, which is conducive to the flushing of the front end of the needle holder and the cleaning of the field of vision, and the water injection port is equipped with There is a rubber cap, which can be closed when it does not need to be rinsed.

Claims (7)

1. the needle holder that uses down of a peritoneoscope, the noumenal seat (5) that comprises fixed sleeving (2) with elongated hollow, the front end of noumenal seat is provided with folder pin portion (1), rear end hinge operation handle (3), it is characterized in that: described folder pin portion comprises stationary jaw (9) and the movable jaw (10) that is arranged on the fixed sleeving front end, and this activity jaw (10) is hinged on the stationary jaw (9) movably; Described noumenal seat is provided with pull bar (4), and is hinged with movable jaw after an end of pull bar passes from the fixed sleeving inner chamber, and the other end is hinged by brace (7,8) and operating grip.

2. the needle holder that a kind of peritoneoscope according to claim 1 uses down, it is characterized in that: an end and the operating grip (3) of described brace (7,8) are hinged, and the other end is hinged in the articulated joint (6) of pull bar end.

3. the needle holder that a kind of peritoneoscope according to claim 1 and 2 uses down, it is characterized in that: described stationary jaw (9) is lateral bending shape with movable jaw (10), between occlusal surface (11) that coincide mutually between stationary jaw and the movable jaw and the needle holder main shaft inclination angle is arranged.

4. the needle holder that a kind of peritoneoscope according to claim 3 uses down is characterized in that: be shaped on the horizontal slice tooth that increases friction on the described occlusal surface (11).

5. the needle holder that a kind of peritoneoscope according to claim 4 uses down, it is characterized in that: described operating grip is made two toroidals.

6. the needle holder that a kind of peritoneoscope according to claim 5 uses down, it is characterized in that: the bottom of described operating grip (3) also is provided with the latch (14) of the spacing usefulness of an operating grip.

7. the needle holder that a kind of peritoneoscope according to claim 6 uses down, it is characterized in that: the rear end of described fixed sleeving is shaped on a water filling port (15), front end is shaped on the outlet (17) that is connected with water filling port, two ends are by the intracavity inter-connection of fixed sleeving, and the water filling port place is furnished with the rubber block again.

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