Grasping forceps and scissors combined instrument for hysteroscope

Abstract

The utility model provides a grasping forceps and scissors combined instrument for a hysteroscope. The grasping forceps and scissors combined instrument comprises a grasping forceps unit and a scissors unit, the nipper unit comprises a first tube body, and the scissor unit comprises a second tube body; the second tube body of the scissors unit penetrates through the through hole of the fixing piece of the nipper unit and then is inserted into the first tube body of the nipper unit; the second end of the second pipe body is exposed outside the first pipe body; when the scissors are operated, the first end of the second pipe body is pushed out of the first end of the first pipe body, so that the first blade and the second blade are exposed on the outer sides of the first claw tooth and the second claw tooth; when the claw clamp operation is carried out, the first end of the second pipe body is retracted into the first end of the first pipe body.

Description

Technical Field

[0001] This application relates to grasping forceps and scissors used under hysteroscope, and particularly to a grasping forceps and scissors composite instrument for hysteroscope. Background Art

[0002] Submucous uterine fibroids refer to uterine fibroids that are partially or entirely located within the uterine cavity. Even if the diameter is very small, they are likely to cause symptoms and affect fertility. Once detected, regardless of whether there are symptoms or not, it is recommended to deal with them as early as possible. Currently, hysteroscopic resection of submucous uterine fibroids at home and abroad mostly uses hysteroscopic electroresection (hereinafter referred to as electrocautery). The electrothermal effect generated during the operation not only burns the endometrium covering the surface of the submucous uterine fibroids but also easily damages the endometrial tissue around the uterine fibroids, which is not beneficial to patients with fertility requirements. For some special parts (cornua and fundus of the uterus) or situations such as type II and multiple submucous uterine fibroids, the traditional electrocautery surgery is still very difficult to handle.

[0003] With the increasing emphasis on the concept of fertility protection among the public, hysteroscopic cold knife resection is more frequently used. Hysteroscopic cold knife resection has the advantages of simple operation, less trauma, and rapid postoperative recovery. Currently, during hysteroscopic cold knife resection, it is necessary to use a hysteroscopic scissors to cut open the endometrial layer under the mirror, then withdraw the scissors, insert a hysteroscopic grasping forceps, clamp the fibroid tissue, and perform enucleation. Repeatedly inserting and withdrawing the scissors and inserting and withdrawing the grasping forceps in this way will result in a relatively long process, low surgical efficiency, and is not beneficial to the health of patients. Summary of the Utility Model

[0004] In view of the above problems, this application aims to propose a grasping forceps and scissors composite instrument for hysteroscope. This instrument combines a grasping forceps and scissors. After the instrument is inserted into the patient's body through the hysteroscope, scissors or a grasping forceps can be selected according to needs, and the two operations can be alternately performed without removing the instrument from the hysteroscope.

[0005] The grasping forceps and scissors composite instrument for hysteroscope of this application includes: a grasping forceps unit and a scissors unit;

[0006] The grasping forceps unit includes a first tube body, a first claw tooth is integrally formed at the lower part of the first end of the first tube body, and a second claw tooth is installed at the upper part of the first end of the first tube body through a first pivot; a torsion spring is wound on the first pivot, the first end of the torsion spring is fixed on the second claw tooth, and the first end of the torsion spring is fixed to the first end of the first tube body; when the second claw tooth rotates around the first pivot and clamps the first claw tooth, the torsion spring deforms to provide elastic force for the second claw tooth to reset; a handle extending downward is formed near the second end of the first tube body; a through groove is formed on the handle; the through groove is parallel to the first tube body; an operating rod is slidably installed in the through groove; a pressing block is formed at the first end of the operating rod, and a fixing plate is formed on the second end of the operating rod extending upward, and a through hole is formed on the fixing plate; a first pull rope is installed in the first tube body; the first end of the first pull rope is fixed on the lower side of the second claw tooth; the second end of the first pull rope is fixed on the fixing plate; a first compression spring is installed between the pressing block and the handle;

[0007] The scissors unit comprises a second tube body; a first blade is integrally formed on a first side of a first end of the second tube body; a second blade is mounted on a second side of the first end of the second tube body via a second pivot; a bent spring sheet is formed at the rear end of the second blade, and the rear end of the spring sheet abuts against the inner wall of the second tube body; after the first blade and the second blade are staggered and closed, the spring sheet deforms to provide elastic force for resetting the second blade; a draw cord fixing ring is formed at the rear end of the second blade; a second draw cord is mounted in the second tube body; a first end of the second draw cord is fixed to the draw cord fixing ring of the second blade; a stop ring is formed on the outer circumferential surface of the second tube body near the second end of the second tube body; a cover cap is mounted on the second end of the second tube body; the cover cap can slide along the second tube body; the second end of the second draw cord is fixed to the bottom of the cover cap; a second compression spring is mounted between the cover cap and the stop ring;

[0008] The second tube body of the scissors unit is inserted into the first tube body of the grasping forceps unit after passing through the through hole of the fixing plate of the grasping forceps unit; the second end of the second tube body is exposed to the outside of the first tube body; when the scissors operation is implemented, the first end of the second tube body is pushed out of the first end of the first tube body to expose the first blade and the second blade to the outside of the first claw teeth and the second claw teeth; when the claw forceps operation is implemented, the first end of the second tube body is retracted into the first end of the first tube body.

[0009] Preferably, a plurality of inwardly extending protrusions are distributed around the first tube body; the second tube body is supported between the plurality of protrusions, and friction is formed between the plurality of protrusions and the second tube body.

[0010] Preferably, a circle of convex edges is formed near the first end and near the second end of the first tube body respectively.

[0011] Preferably, a concave arc surface concave toward the second side is formed on the first side of the pressing block.

[0012] The grasping forceps and scissors composite instrument for hysteroscope of the present application combines the scissors and grasping forceps used under hysteroscope, reduces the number of times of instrument entry and exit from the uterine cavity, improves the surgical efficiency, shortens the operation time, and thus reduces the risks such as intraoperative bleeding and water intoxication. Brief Description of the Drawings

[0013] Figure 1 It is a schematic perspective view of the grasping forceps and scissors composite instrument for hysteroscope of the present application;

[0014] Figure 2 It is a schematic front view of the grasping forceps and scissors composite instrument for hysteroscope of the present application;

[0015] Figure 3 It is a schematic perspective view of the grasping forceps unit of the grasping forceps and scissors composite instrument for hysteroscope of the present application;

[0016] Figure 4 is Figure 3 the schematic cross-sectional view of the grasping forceps unit;

[0017] Figure 5 It is a schematic perspective view of the scissors unit of the grasping forceps and scissors composite instrument for hysteroscope of the present application;

[0018] Figure 6 is Figure 5 the schematic cross-sectional view of the scissors unit;

[0019] Figure 7 is Figure 5 the schematic front view of the second blade of the scissors unit. Detailed Description of the Embodiment

[0020] Next, the present application will be described in detail with reference to the drawings.

[0021] The grasping forceps and scissors composite instrument for hysteroscope of the present application includes: a grasping forceps unit 10 and a scissors unit 20.

[0022] The grasping forceps unit 10 includes a first tube body 11. A first claw tooth 12a is integrally formed at the lower part of the first end of the first tube body 11, and a second claw tooth 12b is installed at the upper part of the first end of the first tube body 11 through a first pivot shaft (not shown in the figure). The first pivot shaft can be formed in a notch formed at the first end of the first tube body. A torsion spring is wound around the first pivot shaft. The first end of the torsion spring is fixed to the second claw tooth 12b, and the first end of the torsion spring is fixed at the first end of the first tube body 11; when the second claw tooth 12b rotates around the first pivot shaft and clamps with the first claw tooth 12a, the torsion spring deforms to provide elastic force for the reset of the second claw tooth 12b.

[0023] Near the second end of the first tube body 11, a handle 12 extending downward is formed; a through groove is formed on the handle 12; the through groove is parallel to the first tube body 11; an operating rod 16 is slidably installed in the through groove; a pressing block 14 is formed at the first end of the operating rod 16, and a fixing piece 17 is formed at the second end of the operating rod 16 extending upward. A through hole is formed on the fixing piece 15.

[0024] A first pull rope 18 is installed in the first tube body 11; the first end of the first pull rope 18 is fixed on the lower side surface of the second claw tooth 12b; the second end of the first pull rope 18 is fixed on the fixing piece 15; a first compression spring 17 is installed between the pressing block 14 and the handle 13.

[0025] The scissor unit 20 includes a second tube body 21; on the first side of the first end of the second tube body 21, a first blade 22a is integrally formed; on the second side of the first end of the second tube body 21, a second blade 22b is installed through a second pivot (not shown in the figure); the first blade 22a and the second blade 22b face each other in an interleaved manner, which is similar to the two cutting edges of a scissor.

[0026] At the rear end of the second blade 22b, a curved spring piece 22b3 is formed, and the rear end of the spring piece 22b3 abuts against the inner wall of the second tube body 21; after the first blade 22a and the second blade 22b are interleaved and closed, the spring piece 22b3 deforms to provide elastic force for the reset of the second blade 22b.

[0027] At the rear end of the second blade 22b, a pull rope fixing ring 22b1 and a second pivot mounting ring 22b2 are formed. The second pivot can be installed in a notch formed at the first end of the second tube body.

[0028] A second pull rope 26 is installed in the second tube body 21; the first end of the second pull rope 26 is fixed on the pull rope fixing ring 22b1 of the second blade 22b; near the second end of the second tube body 21, a stop ring 25 is formed on the outer peripheral surface of the second tube body 21; a cap 23 is sleeved on the second end of the second tube body 21; the cap 23 can slide along the second tube body 21; the second end of the second pull rope 26 is fixed on the bottom of the cap 23; a second compression spring 24 is installed between the cap 23 and the stop ring 25.

[0029] The second tube body 21 of the scissor unit 20 passes through the through hole of the fixing piece 15 of the gripper unit 10 and is inserted into the first tube body 11 of the gripper unit 10; the second end of the second tube body 21 is always exposed outside the first tube body 11.

[0030] When performing scissor operation, the first end of the second tube body 21 is pushed out of the first end of the first tube body to expose the first blade 22a and the second blade 22b outside the first jaw tooth 12a and the second jaw tooth 12b; when performing forceps operation, the first end of the second tube body 21 is retracted into the first end of the first tube body 11 to avoid interfering with the clamping movement of the first jaw tooth 12a and the second jaw tooth 12b.

[0031] A plurality of inwardly extending ridges 11a are distributed around the inner circumference of the first tube body 11, for example, 2-4 ridges; the second tube body 21 is supported between the plurality of ridges 11a, and a frictional force is formed between the plurality of ridges 11a and the second tube body 21 to maintain the position of the second tube body in the first tube body. This frictional force can be overcome after receiving a predetermined external force to move the second tube body relative to the first tube body. The ridge 11a can also define the gap between the first tube body and the second tube body to ensure that the movement of the first pull rope between the gaps of the first tube body and the second tube body is not disturbed.

[0032] In one embodiment, a circle of ridges 11a are respectively formed near the first end and the second end of the first tube body 11.

[0033] A concave arc surface recessed toward the second side is formed on the first side of the pressing block 14 to facilitate finger pressing thereon.

[0034] When performing a cutting operation, as Figure 1 shown, the second tube body is pushed out of the first tube body, and the first blade and the second blade extend beyond the first jaw tooth and the second jaw tooth, so that the cutting head of the scissors is at the forefront, facilitating the cutting operation. When there is no external force, since the second compression spring pushes the cap in the direction of the second end, the cap pulls the second blade through the second pull rope, and the second blade and the first blade are in an interleaved closed state; at this time, the spring piece of the second blade deforms. When the operator presses the cap, the second compression spring is further compressed, and under the action of the restoring force of the spring piece, the second blade is lifted, and the first blade and the second blade are in an open state.

[0035] When performing a clamping operation, the second tube body is retracted into the first tube body, and the first blade and the second blade are retracted into the first tube body without interfering with the movement of the first jaw tooth and the second jaw tooth. The default state of the grasping forceps unit is as Figure 4As shown, the first compression spring pushes the operating rod to move in the direction of the first end, and the fixing piece is closely attached to the second end of the first tube body; the second claw is in a raised state; when the operator presses the operating rod, the first compression spring is further compressed, the fixing piece moves away from the second end of the first tube body, and the fixing piece pulls the second claw to swing downward through the first pull rope to complete the clamping operation with the first claw. At this time, the torsion spring is in a deformed state. After releasing the operating rod, under the action of the restoring force of the first compression spring, the operating rod drives the fixing piece to move in the direction of approaching the second end of the first tube body, and the torsion spring raises the second claw again under the action of the restoring force. The first claw and the second claw return to the open state again.

Claims

1. A grasping forceps and scissor composite instrument for a hysteroscope, characterized in that include: Grasping forceps unit, scissor unit; The grasping forceps unit includes a first tube body, a first claw tooth is integrally formed at the lower part of the first end of the first tube body, and a second claw tooth is installed at the upper part of the first end of the first tube body through a first pivot; a torsion spring is wound on the first pivot, the first end of the torsion spring is fixed on the second claw tooth, and the first end of the torsion spring is fixed to the first end of the first tube body; when the second claw tooth rotates around the first pivot and clamps the first claw tooth, the torsion spring deforms to provide elastic force for the second claw tooth to reset; a handle extending downward is formed near the second end of the first tube body; a through groove is formed on the handle; the through groove is parallel to the first tube body; an operating rod is slidably installed in the through groove; a pressing block is formed at the first end of the operating rod, and a fixing plate is formed on the second end of the operating rod extending upward, and a through hole is formed on the fixing plate; a first pull rope is installed in the first tube body; the first end of the first pull rope is fixed on the lower side of the second claw tooth; the second end of the first pull rope is fixed on the fixing plate; a first compression spring is installed between the pressing block and the handle; The scissors unit comprises a second tube body; a first blade is integrally formed on a first side of a first end of the second tube body; a second blade is mounted on a second side of the first end of the second tube body via a second pivot; a bent spring sheet is formed at the rear end of the second blade, and the rear end of the spring sheet abuts against the inner wall of the second tube body; after the first blade and the second blade are staggered and closed, the spring sheet deforms to provide elastic force for resetting the second blade; a draw cord fixing ring is formed at the rear end of the second blade; a second draw cord is mounted in the second tube body; a first end of the second draw cord is fixed to the draw cord fixing ring of the second blade; a stop ring is formed on the outer circumferential surface of the second tube body near the second end of the second tube body; a cover cap is mounted on the second end of the second tube body; the cover cap can slide along the second tube body; the second end of the second draw cord is fixed to the bottom of the cover cap; a second compression spring is mounted between the cover cap and the stop ring; The second tube of the scissor unit is inserted into the first tube of the grasping forceps unit after passing through the through hole of the fixing plate of the grasping forceps unit; the second end of the second tube is exposed to the outside of the first tube; when the scissors are operated, the first end of the second tube is pushed out of the first end of the first tube to expose the first blade and the second blade to the outside of the first claw and the second claw; When the claw clamp operation is performed, the first end of the second tube is retracted into the first end of the first tube.

2. The combined grasping forceps and scissors device for hysteroscopy according to claim 1, characterized in that: A plurality of inwardly extending convex edges are distributed around the first tube body; the second tube body is supported between the plurality of convex edges, and friction force is formed between the plurality of convex edges and the second tube body.

3. The combined grasping forceps and scissors device for hysteroscopy according to claim 1, characterized in that: A circle of convex edges is formed near the first end and the second end of the first tube body respectively.

4. The combined grasping forceps and scissors device for hysteroscopy according to claim 1, characterized in that: The first side of the pressing block is formed with a concave arc surface which is concave toward the second side.

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