A suturing device for hysteroscopy

Abstract

The application relates to the field of medical devices, in particular to a suturing device for a hysteroscope, which comprises a sleeve capable of being inserted into an operating hole of the hysteroscope, an inner cavity of one end of the sleeve is provided with a suturing needle and a transmission mechanism, the suturing needle and the transmission mechanism are driven to extend into the inner cavity of the one end of the sleeve by a driving device inserted into the other end of the sleeve, the driving device drives the transmission mechanism to drive the suturing needle, which is provided with a suture, to pierce into a suturing position and to pass out, so that the suture sutures the suturing position. The suturing needle is directly inserted into the operating hole of the hysteroscope to perform suturing, the suturing operation under the laparoscope can be avoided, the pain of the patient is reduced, and the operation of the doctor is facilitated. Meanwhile, the suturing needle in the form of a circular arc section can easily pierce into the suturing position and pass out, the operation is simple and fast, and the suturing operation of the doctor is further facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to medical devices, in particular to a suturing device for hysteroscopy. BACKGROUND

[0002] At present, hysteroscopy is the main means for treating intrauterine diseases. The existing hysteroscopy can be used for resection, electrocision, electrocoagulation hemostasis and other operations, but due to the single-handed operation of hysteroscopy, only one operation hole is available, and hysteroscopy suturing cannot be performed, thereby leading to some operations that can be performed under hysteroscopy, such as suture repair of incision healing defects, which can only be completed from the laparoscope, increasing the trauma of the patient. SUMMARY

[0003] In view of the above technical problems, the present application provides a suturing device for hysteroscopy, which is simple and convenient to operate.

[0004] The technical scheme adopted by the present application to solve the above technical problems is as follows: a suturing device for hysteroscopy, comprising a sleeve capable of being inserted into the operation hole of the hysteroscope, a suturing needle and a transmission mechanism are arranged in the inner cavity of one end of the sleeve, the suturing needle and the transmission mechanism are driven by a driving device inserted from the other end of the sleeve to extend out of the inner cavity of the one end of the sleeve, the driving device drives the transmission mechanism to drive the suturing needle with a suture line to penetrate into the suture site and out of it, so as to suture the suture site with the suture line.

[0005] Preferably, the driving device comprises a rubber plug arranged in the inner cavity of the sleeve and a push-pull rod for driving the rubber plug to move axially along the inner cavity of the sleeve, one end of the push-pull rod passes through the rubber plug and is connected with the transmission mechanism, and the other end of the push-pull rod extends out of the other end of the sleeve.

[0006] Preferably, the suturing needle is an arc segment greater than a semicircle, and a needle hole is formed in the needle head of the suturing needle for the suture line to pass through.

[0007] Preferably, the driving device further comprises a micro motor arranged at one end of the push-pull rod, the transmission mechanism comprises a transmission component driven to rotate by the micro motor and two transmission joints driven to move synchronously by the transmission component, the outer profiles of the two transmission joints form an arc segment greater than a semicircle, the suturing needle is sleeved on the outer profiles of the arc segment of the two transmission joints with the same center, and the two transmission joints drive the suturing needle to rotate around the center.

[0008] Preferably, the output shaft of the micro motor passes through the center and is perpendicular to the circle where the center is located, the transmission component comprises a driving gear mounted at the end of the output shaft and two driven gears driven to rotate synchronously by the driving gear, and each driven gear drives one of the transmission joints to move.

[0009] As preferred, each transmission section comprises a bracket located in the middle of the output shaft and perpendicular to the output shaft, each bracket is fixedly connected with the shell of the micro motor through a support rod, one bracket is semicircular, and the other bracket is concentric and has the same diameter and is fan-shaped, each bracket is externally sleeved with a corresponding shaped conveyor belt, each conveyor belt is driven to rotate around the corresponding bracket by one driven gear, and the arc segment of the semicircular conveyor belt on one bracket and the arc segment of the fan-shaped conveyor belt on the other bracket form an arc segment larger than a semicircle of the external contour of the two transmission sections, and the suture needle is sleeved on the arc segments of the two conveyor belts and is driven to rotate around the center by the two conveyor belts.

[0010] As preferred, the surfaces of the arc segments of the two conveyor belts are provided with grooves in the circumferential direction, and the suture needle is arranged in the grooves.

[0011] As preferred, each bracket is provided with an axle sleeve on the side wall, each axle sleeve is internally provided with a rotating shaft, one end of each rotating shaft is provided with one driven gear, and the other end of each rotating shaft is provided with a belt pulley arranged on the corresponding bracket, each bracket is provided with an idler pulley at each bending position of the contour, and the conveyor belt is wound around the corresponding belt pulley and idler pulley.

[0012] As preferred, the outer wall of the needle body of the suture needle is provided with a plurality of barbs in the circumferential direction.

[0013] As preferred, the push-pull rod is hollow, the other end of the push-pull rod is provided with a switch connectable with an external power source, and the micro motor is electrically connected with the switch through a wire arranged in the inner cavity of the push-pull rod.

[0014] As can be seen from the above technical solutions, the suture needle is directly placed in the operating hole of the hysteroscope for suturing, so that the suturing operation under the laparoscope can be avoided, the pain of the patient is reduced, and the operation of the doctor is facilitated. Meanwhile, the suture needle with the arc segment can be easily inserted into the suture position and penetrated out, the operation is simple and fast, and the suturing operation of the doctor is further facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structure schematic view of one preferred mode of the present application.

[0016] Figure 2 is a partial side view structure schematic view of Figure 1 . DETAILED DESCRIPTION

[0017] The present application will be described in detail below in combination with Figure 1 and Figure 2 . The schematic embodiments and descriptions of the present application are used to explain the present application, but are not used to limit the present application.

[0018] As Figure 1 The application provides a suturing device for hysteroscopy, which comprises a sleeve 1 with one end capable of extending into the operating hole of the hysteroscope, a suturing needle 2 and a transmission mechanism 3 arranged in the inner cavity of the one end of the sleeve, preferably, the suturing needle is an arc segment larger than a semicircle, so that the circumferential movement of the suturing needle is beneficial to the penetration and exit of the suturing needle at the suture site; the needle head 21 of the suturing needle is provided with a needle hole 22 for the suturing thread 4 to pass through, so that the suturing thread can be worn in the needle hole to realize suturing; preferably, the outer wall of the needle body 23 of the suturing needle is provided with a plurality of barbs 24 at intervals in the circumferential direction, which is further beneficial to the penetration and exit of the suturing needle at the suture site; the suturing needle and the transmission mechanism are driven by a driving device 5 inserted from the other end of the sleeve to extend into the inner cavity of the one end of the sleeve, so that the suturing needle can be adjusted to the appropriate position at the suture site; the driving device 5 drives the transmission mechanism 3 to drive the suturing needle with the suturing thread to penetrate into the suture site and exit, so as to ensure that the suturing thread is left in the suture site to suture the suture site.

[0019] The driving device 5 of the application comprises a rubber plug 51 arranged in the inner cavity of the sleeve and a push-pull rod 52 for driving the rubber plug to move axially along the inner cavity of the sleeve, one end of the push-pull rod passes through the rubber plug and is connected with the transmission mechanism 3, so as to drive the transmission mechanism and the suturing needle to extend or retract into the sleeve to adjust the position of the suturing needle; the other end of the push-pull rod extends out of the other end of the sleeve, which is convenient for the doctor to hold the push-pull rod to operate; preferably, the driving device 5 further comprises a micro motor 53 arranged at the end of the push-pull rod, the push-pull rod is hollow, the other end of the push-pull rod is provided with a switch 54 connectable with an external power source, the micro motor is electrically connected with the switch through a wire 55 arranged in the inner cavity of the push-pull rod, so that the micro motor is started by the doctor operating the switch to realize electric suturing, which is simple, convenient and fast; the transmission mechanism 3 comprises a transmission component 31 driven to rotate by the micro motor 53 and two transmission joints 32 synchronously moved by the transmission component, the outer profiles of the two transmission joints form an arc segment larger than a semicircle, the suturing needle is arranged on the outer profiles of the arc segment of the two transmission joints with the same center, and the two transmission joints synchronously move to drive the suturing needle to rotate around the center, so as to realize the penetration and exit of the suturing needle.

[0020] The output shaft 56 of the micro motor 53 penetrates the center of the circle and is perpendicular to the circle, so that the output shaft rotates around the center of the circle. The transmission component 31 comprises a driving gear 311 mounted on the end of the output shaft and two driven gears 312 synchronously rotating driven by the driving gear. The driving gear drives the two driven gears at the center of the circle, so that the suture needle can rotate around the center of the circle and the structure is more compact and space-saving. Each driven gear drives a transmission segment 32 to rotate, so as to drive the suture needle to rotate around the center of the circle. Specifically, each transmission segment 32 comprises a bracket 321 located at the middle of the output shaft and perpendicular to the output shaft. Each bracket is fixedly connected to the shell of the micro motor through a support rod 322, i.e. the micro motor body and the driving gear are located at the two ends of the output shaft, and the bracket is located in the space plane between the micro motor body and the driving gear, so as to ensure the support of the bracket and the transmission of the whole device. One bracket is in the shape of a semicircle, and the other bracket is in the shape of a concentric and equal-diameter fan, i.e. the center of the fan-shaped bracket is the same as that of the semicircle-shaped bracket, and the diameter of the fan-shaped bracket is equal to that of the semicircle-shaped bracket, so as to ensure that the arc of the two brackets is on the same circle. Each bracket is externally sleeved with a corresponding transmission belt 323, so that one transmission belt is in the shape of a semicircle, and the other transmission belt is in the shape of a fan.

[0021] In the implementation process, each transmission belt is driven by a driven gear to rotate around the corresponding bracket, i.e. each transmission belt rotates around its radius and arc. The arc of the semicircle-shaped transmission belt on one bracket and the arc of the fan-shaped transmission belt on the other bracket form an arc greater than a semicircle on the outer contour of the two transmission segments. The suture needle is sleeved on the arcs of the two transmission belts and is driven by the two transmission belts to rotate around the center of the circle, so as to realize the rotation of the suture needle. The contour of the suture needle combined with the two brackets is an arc greater than a semicircle, so as to ensure that the openings of the suture needle and the two brackets are smaller than the diameter of the circle, thereby preventing the suture needle from falling off. At the same time, the openings of the two brackets can facilitate the placement of the whole device at the suture site, so as to avoid interference with the tissues at the suture site and ensure the smooth suture. Generally, the arc of the two brackets combined is 210°-270°, and the arc of the suture needle can be slightly shorter. As a preferred embodiment, the surface of the arc of the two transmission belts is provided with a groove in the circumferential direction, and the suture needle is placed in the groove, so as to further prevent the suture needle from falling off. The groove is preferably in clearance fit with the suture needle, so as to reduce the friction.

[0022] As preferred, each bracket side wall is fixed with a shaft sleeve 313, which can be welded on the bracket side wall to ensure the stability of the shaft sleeve; each shaft sleeve is installed with a rotating shaft 314 to ensure the smooth rotation of the rotating shaft in the shaft sleeve; one end of each rotating shaft is installed with a driven gear, and the other end of each rotating shaft is installed with a belt pulley 315 arranged on the corresponding bracket; each bracket profile is installed with an idler 316 at each bending position; and the transmission belt is wound around the corresponding belt pulley and idler. Specifically, the fan-shaped transmission belt is provided with an idler at the intersection of two radii and two ends of an arc, and a driven gear is arranged at the intersection of the two radii; the semi-circular transmission belt is also provided with an idler at the intersection of two radii and two ends of an arc, and a driven gear is arranged at the intersection of the two radii; and an idler can also be arranged in the middle of the arc segment to ensure more stable transmission. In the implementation process, the idler can be installed on the shaft through a bearing or a shaft sleeve, and the bearing or the shaft sleeve is fixedly installed on the bracket, so as to realize the passive rotation of the idler.

[0023] In the transmission process, when the driving gear drives the two driven gears to rotate, the two rotating shafts drive the two belt pulleys to rotate, and the transmission belt on the belt pulley rotates around the corresponding idler and belt pulley under the action of friction; at this time, the suture needle wrapped outside the profile of the two belt pulleys rotates under the action of friction with the transmission belt groove; when the needle head of the suture needle rotates to the opening of the two brackets, the needle head gradually separates from the transmission belt under the action of its own gravity and rotation force and overcomes the friction, and then the needle head enters another transmission belt from one transmission belt, and the needle body also rotates from one transmission belt to another transmission belt, and so on, so as to realize the circular motion of the suture needle.

Claims

1. A suturing device for hysteroscopy comprising a sleeve having one end extendable into a working hole of a hysteroscope, characterized in that: The inner cavity of one end of the sleeve is provided with a suture needle and a transmission mechanism, the suture needle and the transmission mechanism are driven to extend into the inner cavity of the one end of the sleeve by a driving device inserted from the other end of the sleeve, the driving device drives the transmission mechanism to drive the suture needle with a suture line to penetrate into and out of the suture part, so that the suture line sutures the suture part; the driving device comprises a rubber plug arranged in the inner cavity of the sleeve and a push-pull rod for driving the rubber plug to move axially along the inner cavity of the sleeve, one end of the push-pull rod passes through the rubber plug and is connected with the transmission mechanism, the other end of the push-pull rod extends out of the other end of the sleeve; the driving device further comprises a micro motor arranged at the end of the push-pull rod, the transmission mechanism comprises a transmission component driven to rotate by the micro motor and two transmission joints driven to move synchronously by the transmission component, the outer profiles of the two transmission joints form a circular arc segment larger than a semicircle, the suture needle is sleeved on the outer profiles of the circular arc segment of the two transmission joints, and the two transmission joints drive the suture needle to rotate around the center; the output shaft of the micro motor passes through the center and is perpendicular to the circle where the center is located, the transmission component comprises a driving gear mounted at the end of the output shaft and two driven gears driven to rotate synchronously by the driving gear, and each driven gear drives one transmission joint to move; each transmission joint comprises a support located at the middle of the output shaft and perpendicular to the output shaft, and each support is fixedly connected with the shell of the micro motor through a support rod, one support is semicircular, and the other support is concentrically and circularly fan-shaped, each support is externally sleeved with a corresponding shape of a conveyor belt, and each conveyor belt is driven to rotate around the corresponding support by one driven gear, the circular arc segment of the semicircular conveyor belt on one support and the circular arc segment of the fan-shaped conveyor belt on the other support form the circular arc segment larger than the semicircle of the outer profiles of the two transmission joints, and the suture needle is sleeved on the circular arc segments of the two conveyor belts and is driven to rotate around the center by the two conveyor belts; the push-pull rod is hollow, the other end of the push-pull rod is provided with a switch connectable with an external power source, and the micro motor is electrically connected with the switch through wires arranged in the inner cavity of the push-pull rod.

2. The suturing device for hysteroscopy according to claim 1, wherein: The suture needle is a circular arc segment larger than a semicircle, and a needle hole for the suture line to pass through is formed in the needle head of the suture needle.

3. The suturing device for hysteroscopy according to claim 1, wherein: The circular arc segments of the two conveyor belts are provided with grooves in the circumferential direction, and the suture needle is arranged in the grooves.

4. The suturing device for hysteroscopy according to claim 3, wherein: Each support is fixedly provided with an axle sleeve, each axle sleeve is internally mounted with a rotating shaft, one end of each rotating shaft is mounted with one driven gear, and the other end of each rotating shaft is mounted with a belt pulley arranged on the corresponding support, each support is provided with idler wheels at the bending positions of the profile, and the conveyor belts are wound around the corresponding belt pulleys and idler wheels.

5. The suturing device for hysteroscopy according to claim 2, wherein: A plurality of barbs are circumferentially and spacedly arranged on the outer wall of the needle body of the suture needle.

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