CN215503320U

CN215503320U - Self-rotating and self-contracting multi-claw foreign matter forceps

Info

Publication number: CN215503320U
Application number: CN202121683843.8U
Authority: CN
Inventors: 钟金伟; 卢光荣; 周羽翙; 杨守醒; 薛战雄
Original assignee: Second Affiliated Hospital and Yuying Childrens Hospital of Wenzhou Medical University
Current assignee: Second Affiliated Hospital and Yuying Childrens Hospital of Wenzhou Medical University
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2022-01-14
Anticipated expiration: 2031-07-23

Abstract

The utility model discloses self-rotating and contracting multi-claw foreign matter forceps which comprise a handle, a pipe sheath and a forceps head, wherein the handle is fixed with the forceps head through a guy cable, the guy cable is positioned in the pipe sheath, the forceps head comprises a plurality of forceps claws, each forceps claw comprises a fixed end and a grabbing end, and further comprises a pull rope and a rotating mechanism for winding the pull rope, the rotating mechanism is movably arranged in one end, close to the forceps head, of the pipe sheath, the forceps claws are arranged in a mode that the middle parts of the forceps claws are outwards bent along the radial direction of the pipe sheath, the grabbing ends of the forceps claws are provided with through holes, one end of the pull rope is fixed at the grabbing end of any forceps claw, the other end of the pull rope sequentially penetrates through the through holes in the grabbing ends of the adjacent forceps claws and then is connected to the rotating mechanism, and the area surrounded by the pull rope after the grabbing ends of the forceps claws are connected is a grabbing area. The grabbing ends of the clamp claws can be easily folded under the pulling of the pull rope, so that hard and small foreign bodies can be easily taken out from corresponding positions.

Description

Self-rotating and self-contracting multi-claw foreign matter forceps

Technical Field

The utility model relates to the technical field of medical auxiliary instruments, in particular to self-rotating and self-contracting multi-claw foreign body forceps.

Background

Foreign body clips are commonly used in surgical operations for clipping foreign bodies or diseased tissues in the digestive tract, respiratory tract, or nose and mouth of the human body. In the process of taking out the foreign body, the multi-jaw forceps in the common figure 9 enters a grasping part through an endoscope, and then the grasping end of the forceps head is controlled by the handle to grasp.

However, since the jaws of the pliers head of fig. 9 are elongated, if a relatively hard foreign object is encountered during the gripping process, the jaws may be deformed and cannot be gripped. If the foreign matter is less, when the binding clip is in the open mode, the distance between the snatching ends of adjacent pincers claws is bigger than usual, so that the smaller foreign matter is difficult to be snatched successfully, and the operation difficulty in the operation is improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide self-rotating and self-contracting multi-claw foreign body forceps, wherein the grabbing ends of the forceps claws can be easily folded under the pulling of a pull rope, so that hard and small foreign bodies can be easily taken out from corresponding positions.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme: the utility model provides a many claws foreign matter pincers of autogyration shrink, handle, tube-sheath and binding clip, the handle passes through the cable and is fixed with the binding clip, the cable is located the tube-sheath, the binding clip includes a plurality of claws, the claw includes the stiff end and snatchs the end, still includes the stay cord and is used for the slewing mechanism of rolling stay cord, slewing mechanism mobile setting is in the one end that the tube-sheath is close to the binding clip, the claw is the radial outside bending setting of middle part along the tube-sheath, the end of snatching of claw is equipped with the through-hole, the end of snatching of arbitrary claw is fixed to the one end of stay cord, and the other end of stay cord passes the through-hole on the end of snatching of adjacent claw in proper order after, connects on slewing mechanism, the regional around for snatching the district behind the end of snatching of a plurality of claws is connected to the stay cord.

In the operation process, the doctor stretches into the operation region with the binding clip of foreign matter pincers, earlier with the foreign matter that needs the clamp to be got in the district of snatching that the end formed of a plurality of claws aims at the district of snatching of a plurality of claws, then the pulling cable, the stay cord is tightened up through rotating-structure after the cable is driven, the end of snatching of claw is close to each other under the effect of stay cord until foldeing, guarantees that the foreign matter is carried by the binding clip after, takes out the foreign matter.

Compared with the prior art, the self-rotating shrinkage multi-claw foreign body forceps adopting the technical scheme have the following beneficial effects:

1. by adopting the self-rotating and contracting multi-claw foreign matter forceps, the grabbing ends of the plurality of claws are mutually connected through the pull rope, so that foreign matters can be more accurately prevented in the forceps head.

2. Through the restriction of stay cord, the end of snatching of tong claw is close to each other earlier, reduces the distance of adjacent tong claw, can prevent effectively that the foreign matter from droing from the binding clip at the in-process that the binding clip tightens up, improves the success rate that the disposable clamp of getting the foreign matter was got to the clamp.

Preferably, the rotating mechanism comprises a shaft core and a take-up shaft, the shaft core is arranged between the inhaul cable and the jaw, the take-up shaft is rotatably sleeved in the middle of the shaft core, and bosses for preventing the take-up shaft from separating from the shaft core are arranged on outer eaves of two end parts of the shaft core; the outer side surface of the boss on the shaft core is in contact with the inner wall of the tube sheath, a sliding groove is formed in the inner wall of the tube sheath and arranged along the length direction of the tube sheath, a sliding block is arranged on the outer side surface of the boss, and when the shaft core is located in the tube sheath, the sliding block is located in the sliding groove.

Preferably, the pipe wall of the pipe sheath is provided with an internal thread, the outer wall of the take-up shaft is provided with an external thread matched with the internal thread, and one end of the pull rope, far away from the grabbing end of the claw, is connected to the take-up shaft.

The stay cord is fixed in the sheath one end that is close to the binding clip, and when the user operating handle, when the application of force to the binding clip, when the axle core moved along the length direction of sheath, the receipts spool on the axle core rotated under the cooperation of internal and external screw thread, receive and release the stay cord, played the purpose of the district size is got to the clamp of control tong claw. In the actual operation process, the stay cord need not to increase other control mechanism and controls, guarantees the simple of structure and operation.

Preferably, the take-up shaft is divided into a matching part and a take-up part for winding the pull rope along the length direction of the tube sheath, and the external thread is arranged on the outer side of the matching part; the wire distributing groove is formed in the boss at one end, close to the jaw, of the shaft core, the pull rope penetrates through the wire distributing groove to be connected to the wire collecting shaft, and the wire collecting portion of the wire collecting shaft is arranged at one end, close to the jaw, of the wire collecting portion.

Preferably, the wiring groove is a through hole or a groove.

Preferably, the grabbing end of the clamp claw is provided with a grabbing ring, the plane where the grabbing ring is located is perpendicular to the length direction of the clamp claw, and the grabbing ring is arranged in the grabbing area.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of a self-rotating contracting multi-claw foreign body forceps according to the present invention.

Fig. 2 is a schematic structural view of the internal rotating mechanism after the pipe sheath is partially cut away in this embodiment.

Fig. 3 is a sectional view of the sheath and the rotating mechanism in the present embodiment.

Fig. 4 is a schematic structural view of the tube sheath of the present embodiment with the cut-away inner portion.

Fig. 5 is a structural schematic diagram of the cable in fig. 2 pulled in the arrow direction to achieve the purpose of winding.

Fig. 6 is a schematic structural view of the rotating mechanism in the present embodiment.

Fig. 7 is a schematic structural view of the take-up reel in this embodiment.

Fig. 8 is a schematic structural view of the hub in this embodiment.

Fig. 9 is a schematic structural diagram of the prior art.

Reference numerals: 10. a sheath; 11. a chute; 12. an internal thread; 13. a cable; 2. a jaw; 21. a fixed end; 22. a grabbing end; 23. a through hole; 3. pulling a rope; 4. a rotating mechanism; 41. a shaft core; 410. a boss; 411. a slider; 412. a wiring groove; 42. taking up a spool; 421. a wire collecting part; 422. a fitting portion; 423. an external thread; 5. and (5) grabbing the ring.

Detailed Description

The utility model is further described below with reference to fig. 1 to 8.

The self-rotating and contracting multi-claw foreign body forceps comprise a handle (not shown in the figure), a tube sheath 10 and forceps heads, and are similar to the structure of the traditional foreign body forceps, the handle plays a role in controlling the forceps heads through a stay cable 13, the stay cable 13 is located in the tube sheath 10, and a doctor controls the opening and closing of the forceps heads connected through the stay cable in an operation to achieve the purpose of clamping foreign bodies.

As shown in fig. 1, which is a schematic structural diagram of a forceps head of a self-rotation contraction multi-jaw foreign body forceps, the forceps head in the present embodiment includes 5 forceps jaws 2, and when the forceps jaws 2 are actually disposed, three, four, six, and the like may be adopted according to the size of an actually used surgical site and the size of a foreign body.

The claw 2 of this embodiment includes stiff end 21 and snatchs end 22, and claw 2 sets up for the radial outside bending of middle part edge tube sheath 10, and the stiff end 21 of claw 2 is fixed in the cable and is kept away from the one end of handle, snatchs end 22 and is equipped with grabs ring 5, grabs the perpendicular setting of length direction of ring 5 place plane and claw 2, grabs ring 5 and sets up in the district of snatching.

The grasping end 22 of each gripper 2 is provided with a through hole 23, one end of each pull rope 3 is fixed at the grasping end 22 of any one gripper 2, the other end of each pull rope 3 sequentially penetrates through the through holes 23 of the grasping ends 22 of the grippers 2, and the area surrounded by the pull ropes 3 after being connected with the grasping ends 22 of the grippers 2 is a grasping area.

In addition, in order to ensure that the stay cord 3 does not interfere with the surgical site during use, the middle part of the forceps jaw 2 adjacent to the stay cord 3 is provided with a wire passing hole (not shown in the figure) for the stay cord 3 to pass through, and the stay cord 3 can play a role in fixing the stay cord 3 and the forceps jaw 2 to each other by passing through the wire passing hole, so that the stay cord 3 is more fit with the shape of the forceps jaw 2.

In the embodiment, the grabbing area can be a closed area, when the foreign body forceps are used, the forceps head is directly covered on the foreign body, and then the pull rope 3 is tightened to clamp the foreign body; the grabbing area can also be semi-closed in fig. 1, and when in use, the foreign bodies can be sleeved into the grabbing area from the side edges of the foreign bodies. Therefore, the setting of the string 3 can be selected according to the actual lesion.

As shown in fig. 2, a rotating mechanism 4 for winding the pulling rope 3 is arranged in the sheath 10, and the rotating mechanism 4 is movably arranged in one end of the sheath 10 close to the forceps head. As shown in fig. 6, 7 and 8, the rotating mechanism 4 includes a shaft core 41 and a take-up shaft 42, the shaft core 41 is disposed between the cable and the jaw 2, the take-up shaft 42 is rotatably sleeved on the middle portion of the shaft core 41, and two outer edges of two end portions of the shaft core 41 are provided with bosses 410 for preventing the take-up shaft 42 from separating from the shaft core 41; the outer side surface of the boss 410 on the shaft core 41 is in contact with the inner wall of the tube sheath 10, the inner wall of the tube sheath 10 is provided with a sliding groove 11 arranged along the length direction of the tube sheath 10, the outer side surface of the boss 410 is provided with a sliding block 411, and when the shaft core 41 is positioned in the tube sheath 10, the sliding block 411 is positioned in the sliding groove 11. In order to ensure that the shaft core 41 can better slide along the length of the sheath 10 in the sheath 10, two sliding grooves 11 are symmetrically arranged on the inner wall of the sheath 10, and two sliding blocks 411 are correspondingly arranged on the outer side of the boss 410 of the shaft core 41.

As shown in fig. 3, the cable 13 pulls the rotating mechanism and the upper jaw so that the shaft center 41 moves only along the solid arrow in fig. 3, i.e., along the longitudinal direction of the sheath, under the mutual restriction of the slider 411 and the chute 11.

As shown in fig. 4, the tube wall of the tube sheath 10 is provided with an internal thread 12, the outer wall of the take-up shaft 42 is provided with an external thread 423 matching with the internal thread 12, and one end of the pull rope 3 away from the grasping end 22 of the jaw 2 is connected to the take-up shaft 42. The take-up shaft 42 is divided into a matching part 422 and a take-up part 421 for winding the pull rope 3 along the length direction of the tube sheath 10, the external thread 423 is arranged outside the matching part 422, a wire distributing groove 412 is arranged at one end of the shaft center close to the binding clip, the pull rope 3 is arranged in the wire distributing groove 412 in a penetrating mode, and the take-up part 421 of the take-up shaft 42 is arranged at one end close to the binding clip.

As shown in fig. 3, the wire take-up shaft 42 can rotate around the shaft center 41 in accordance with the movement of the shaft core 41 by the engagement of the internal thread 12 and the external thread 423, and as shown in fig. 2, the wire pull 13 in fig. 2 is pulled in the direction of the arrow, and the shaft center 41 is moved in the same direction by the wire pull 13, and at this time, the wire take-up shaft 42 rotates on the shaft core 41, and one end of the wire pull 3 is fixed to the wire take-up shaft 42. During the rotation of the wire take-up shaft 42, the pull rope 3 can be wound around the wire take-up shaft 42, and finally, as shown in fig. 5, the purpose of tightening the foreign body forceps is achieved.

Under the same condition, the displacement of the cable 13 is much smaller than the length of the pull rope 3 wound by the winding shaft 42 after rotation, so that the effect of slightly pulling the cable 13 to obviously control the opening and closing of the foreign body forceps is achieved.

When the medical cable is used, after a doctor pulls the cable through the handle, the shaft core 41 is driven to slide along the sliding groove 11, and as the take-up shaft 42 can rotate relative to the shaft core 41, the take-up shaft 42 rotates under the matching of the internal thread 12 and the external thread 423 in the sliding process of the shaft core 41; when the core 41 moves toward one end of the handle, the take-up reel 42 rotates, and then the pull cord 3 is wound around the take-up portion 421 of the take-up reel 42, so that the distance between the grasping ends 22 of the respective claws 2 is reduced by the pull cord 3. As shown in fig. 3, the arrows in the figure are both double-headed arrows, if the jaw of the foreign body forceps is to be enlarged, the force applied to the pulling cable 13 can be reduced, at this time, the pulling cable 3 drives the wire winding shaft 42 to rotate in the opposite direction under the action of the tension of the jaws 2, the shaft core 41 moves towards one end of the forceps head under the action of the rotating wire winding shaft, and the distance between the jaws 2 is enlarged.

The foregoing is a preferred embodiment of the present invention, and it will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.

Claims

1. The utility model provides a from rotating many claws foreign matter pincers of shrink, includes handle, tube sheath (10) and binding clip, the handle passes through the cable and is fixed with the binding clip, the cable is located tube sheath (10), the binding clip includes a plurality of claws (2), claw (2) include stiff end (21) and snatch end (22), its characterized in that:

still include stay cord (3) and slewing mechanism (4) that are used for rolling stay cord (3), slewing mechanism (4) can movably set up in tube sheath (10) one end near the binding clip, radial outside bending setting along tube sheath (10) is followed for the middle part in tong claw (2), the end (22) of snatching of tong claw (2) are equipped with through-hole (23), the end (22) of snatching of arbitrary tong claw (2) is fixed to the one end of stay cord (3), and the other end of stay cord (3) passes through-hole (23) on the end (22) of snatching of adjacent tong claw (2) in proper order after, connects on slewing mechanism (4), the regional that centers on behind the end (22) of snatching of a plurality of tong claws (2) is for snatching the district in stay cord (3).

2. The self-rotating retracting multi-jaw foreign-body forceps according to claim 1, characterized in that: the rotating mechanism (4) comprises a shaft core (41) and a take-up shaft (42), the shaft core (41) is arranged at the joint of the stay cable and the jaw (2), the take-up shaft (42) can be rotatably sleeved in the middle of the shaft core (41), and bosses (410) for preventing the take-up shaft (42) from being separated from the shaft core (41) are arranged on the outer eaves of the two end parts of the shaft core (41); the outer side face of a boss (410) on the shaft core (41) is in contact with the inner wall of the tube sheath (10), a sliding groove (11) arranged along the length direction of the tube sheath (10) is formed in the inner wall of the tube sheath (10), a sliding block (411) is arranged on the outer side face of the boss (410), and when the shaft core (41) is located in the tube sheath (10), the sliding block (411) is located in the sliding groove (11).

3. The self-rotating retracting multi-jaw foreign-body forceps according to claim 2, characterized in that: be equipped with internal thread (12) on the pipe wall of tube sheath (10), be equipped with on the outer wall of receipts line axle (42) with internal thread (12) matched with external screw thread (423), stay cord (3) are kept away from tong claw (2) and are snatched the one end of end (22) and connect on receiving line axle (42).

4. The self-rotating retracting multi-jaw foreign-body forceps according to claim 3, characterized in that: the take-up shaft (42) is divided into a matching part (422) and a take-up part (421) for taking up the pull rope (3) along the length direction of the tube sheath (10), and the external thread (423) is arranged on the outer side of the matching part (422); the clamp comprises a clamp head, a shaft core (41) and a pull rope (3), wherein a lug boss (410) at one end of the shaft core (41) close to the clamp claw (2) is provided with a wiring groove (412), the pull rope (3) penetrates through the wiring groove (412) to be connected to a take-up shaft (42), and a take-up part (421) of the take-up shaft (42) is arranged at one end close to the clamp head.

5. The self-rotating retracting multi-jaw foreign-body forceps according to claim 4, characterized in that: the wiring groove (412) is a through hole or a groove.

6. The self-rotating retracting multi-jaw foreign-body forceps according to claim 5, characterized in that: the gripping device is characterized in that a gripping ring (5) is arranged at a gripping end (22) of the gripper (2), the plane where the gripping ring (5) is located is perpendicular to the length direction of the gripper (2), and the gripping ring (5) is arranged in a gripping area.