Multi-degree-of-freedom snakelike hysteroscope biopsy forceps

Abstract

The invention relates to the field of biopsy forceps, and discloses multi-degree-of-freedom snakelike hysteroscope biopsy forceps which comprise a forceps body, a holding handle a is hinged to the rear end of the forceps body, a holding handle b is rotationally connected to the surface of the holding handle a, a multi-degree-of-freedom forceps mechanism is arranged at the front end of the forceps body, and bionic forceps claws at the front end can rotate at multiple angles; a through cavity is formed in the surface of the connecting rod, the surface of the top end of the holding handle b is slidably connected to the inner wall of the bottom end of the clamp body, and the connecting rod is slidably connected to the inner side wall of the clamp body. Through 360-degree rotation of the rotating seat and the forceps body, multi-angle positioning of the limiting convex rod and deformation design of the bent arm pipe and the corrugated pipe, the bionic forceps claw can realize all-directional angle adjustment in a uterine cavity and easily reach a corner position which is difficult to touch by a traditional instrument, a sampling blind area is effectively eliminated, the detection rate of hidden lesions is increased, and the operation is simple and convenient. And the operation requirement of a complex uterine cavity environment is met.

Description

Technical Field

[0001] This invention relates to the field of biopsy forceps technology, specifically to multi-degree-of-freedom serpentine hysteroscopic biopsy forceps. Background Technology

[0002] Hysteroscopic biopsy forceps are a medical device specifically used in hysteroscopic examinations or surgeries. They are mainly used to grasp endometrial tissue or suspicious lesions within the uterine cavity under direct vision for pathological examination.

[0003] Hysteroscopic biopsy forceps are a key instrument for diagnosing gynecological intrauterine diseases. They are used to obtain tissue samples from deep inside the uterine cavity for pathological testing. The flexibility of operation and the stability of sampling directly affect the accuracy of diagnosis.

[0004] However, traditional rigid forceps cannot achieve multi-dimensional bending or 360° rotation. During operation, the overall posture of the instrument needs to be adjusted repeatedly, which not only increases the operation time, but may also cause discomfort or damage to the patient due to the instrument colliding with the uterine cavity tissue. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a multi-degree-of-freedom serpentine hysteroscopic biopsy forceps, which solves the problem of not being able to achieve multi-dimensional bending or 360° rotation, and the need to repeatedly adjust the overall posture of the instrument during operation.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a multi-degree-of-freedom serpentine hysteroscopic biopsy forceps, including a forceps body, a gripping handle a hinged to the rear end of the forceps body, a gripping handle b rotatably connected to the surface of the gripping handle a, and a multi-degree-of-freedom forceps mechanism provided at the front end of the forceps body, for the bionic claws at the front end to rotate at multiple angles; The multi-degree-of-freedom clamp mechanism includes a connecting rod with a through cavity on its surface. The side wall of the top end of the gripping handle b is in contact with the inner wall of the cavity of the connecting rod. The surface of the top end of the gripping handle b is slidably connected to the inner wall of the bottom end of the clamp body. The connecting rod is slidably connected to the inner side wall of the clamp body.

[0007] Preferably, a rotating seat is fixedly and rotatably connected to the end of the clamp body away from the grip handle a, and a curved arm tube is fixedly connected to the end of the rotating seat away from the clamp body. A connecting seat is fixedly connected to the front end surface of the connecting rod, and a connecting rod is slidably connected to the inner side wall of the rotating seat. A connecting ball head is fixedly connected to the front end of the connecting rod, and a metal flexible tube is fixedly connected to the end of the connecting rod away from the connecting ball head. A traction head is fixedly connected to the end of the metal flexible tube away from the connecting rod, and hinge rods are hinged to both sides of the end of the traction head away from the metal flexible tube. Bionic clamps are hinged to the ends of the two sets of hinge rods away from the traction head, and head end tubes are rotatably connected to the outer side walls of the two sets of bionic clamps.

[0008] Preferably, the inner walls of the upper and lower sides of the rear end of the rotating seat are elastically connected to limit protrusions by reset springs.

[0009] Preferably, a lever is rotatably connected through the side wall of the rear end of the rotating seat, and a take-up reel is fixedly connected to the rotation center axis of the lever. A traction rope is wound around the surface of the take-up reel, and two sets of guide wheels are in contact with the surface of the traction rope. The end of the traction rope away from the take-up reel is fixedly connected to the rear end of the head tube away from the center point. A corrugated pipe is fixedly connected between the curved arm tube and the head tube near the center point, and a deformable sleeve is fixedly connected between the curved arm tube and the head tube away from the center point.

[0010] Preferably, the inner side of the connecting seat is provided with a ball groove, the connecting ball head contacts the inner side wall of the ball groove of the connecting seat, and the connecting rod is slidably connected to the inner side wall of the curved arm tube.

[0011] Preferably, the flexible metal tube passes through and is slidably connected to the inner sidewall of the corrugated pipe, and the corrugated pipe is slidably connected to the inner sidewall of the deformable sleeve.

[0012] Preferably, the traction rope is slidably connected to the inner sidewall of the deformable sleeve, and the traction head is slidably connected to the inner sidewall of the bellows.

[0013] Preferably, the two sets of guide wheels are rotatably connected to the inner sidewall of the rotating seat, the traction rope passes through and is slidably connected to the inner sidewall of the rotating seat, the traction rope passes through and is slidably connected to the inner wall of the curved arm tube, and the winding reel is rotatably connected to the inner sidewall of the rotating seat.

[0014] Preferably, one end of the reset spring is fixedly connected to the rear end of the limiting protrusion, and the other end of the reset spring is fixedly connected to the inner wall of the rotating seat.

[0015] Preferably, the limiting protrusion is slidably connected to the inner side wall of the rotating seat, and the front end surface of the clamp body has multiple sets of ball grooves, with the outer wall of the limiting protrusion in contact with the inner wall of the ball groove of the clamp body.

[0016] This invention provides a multi-degree-of-freedom serpentine hysteroscopic biopsy forceps. It has the following beneficial effects: 1. This invention utilizes the 360° rotation of the rotating seat and the forceps body, combined with the multi-angle positioning of the limiting protrusion, and the deformation design of the curved arm tube and the bellows tube, to enable the bionic forceps to achieve all-round angle adjustment within the uterine cavity, easily reaching corners that are difficult to reach with traditional instruments, effectively eliminating sampling blind spots, improving the detection rate of hidden lesions, and adapting to the operational needs of complex uterine cavity environments.

[0017] 2. This invention achieves independent control of the opening and closing of the forceps and angle adjustment through the linkage design of the pressing drive structure of the grip and the lever. Medical staff can complete complex actions through simple operation, reducing the difficulty of operation. At the same time, the cooperation between the limiting protrusion and the reset spring ensures stable locking after angle adjustment. The automatic reset function of the deformable sleeve simplifies the posture recovery process, greatly shortens the operation time, and improves the efficiency of diagnosis and treatment.

[0018] 3. This invention, through the interlocking bite design of the bionic forceps and the bionic tooth block structure, can firmly grasp tiny tissue samples, avoiding the slippage or tearing problems of traditional forceps and ensuring sample integrity; the flexible arm tube made of soft alloy material and the metal flexible tube reduce the hard collision with the uterine cavity tissue, and together with the buffering effect of the corrugated tube, it reduces the risk of tissue damage during the operation, taking into account both sampling effect and patient comfort. Attached Figure Description

[0019] Figure 1 This is an overall perspective view of the present invention; Figure 2 This is a partial cross-sectional view of the connector of the present invention; Figure 3 This is a partial cross-sectional view of the connector and a three-dimensional schematic diagram of the connector and connecting rod of the present invention; Figure 4 This is a partial cross-sectional view of the rotating seat of the present invention; Figure 5 This is a partial cross-sectional view of the curved arm tube of the present invention; Figure 6 This is a partial cross-sectional view of the deformable sleeve and bellows structure of the present invention.

[0020] Among them, 1. clamp body; 2. grip handle a; 3. grip handle b; 4. multi-degree-of-freedom clamp mechanism; 41. connecting rod; 42. rotating seat; 43. connecting seat; 44. return spring; 45. limiting protrusion; 46. connecting ball head; 47. connecting rod; 48. lever; 49. reel; 410. traction rope; 411. guide wheel; 412. bending arm tube; 413. metal hose; 414. deformation sleeve; 415. corrugated pipe; 416. traction head; 417. head end tube; 418. hinge rod; 419. bionic clamp. Detailed Implementation

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example: Please see the appendix Figure 1 - Appendix Figure 6 The present invention provides a multi-degree-of-freedom snake-shaped hysteroscopic biopsy forceps, including a forceps body 1, a handle a2 hinged to the rear end of the forceps body 1, a handle b3 rotatably connected to the surface of the handle a2, and a multi-degree-of-freedom forceps mechanism 4 provided at the front end of the forceps body 1, wherein two sets of bionic forceps at the front end can rotate at multiple angles. The multi-degree-of-freedom clamp mechanism 4 includes a connecting rod 41. A through cavity is formed on the surface of the connecting rod 41. The side wall of the top end of the gripping handle b3 is in contact with the inner wall of the cavity of the connecting rod 41. The surface of the top end of the gripping handle b3 is slidably connected to the inner wall of the bottom end of the clamp body 1. The connecting rod 41 is slidably connected to the inner side wall of the clamp body 1. By pressing the gripping handle a2 and the gripping handle b3 against each other, the gripping handle b3 can pull the connecting rod 41 to move backward inside the clamp body 1.

[0023] Furthermore, a rotating seat 42 is fixedly and rotatably connected to the end of the forceps 1 away from the gripping handle a2. The rotation of the rotating seat 42 allows the entire unit to rotate 360 ​​degrees to accommodate different positions within the uterine cavity. A curved arm tube 412 is fixedly connected to the end of the rotating seat 42 away from the forceps 1. A connecting seat 43 is fixedly connected to the front end surface of the connecting rod 41. A ball groove is formed on the inner side of the connecting seat 43. The connecting ball head 46 contacts the inner sidewall of the ball groove in the connecting seat 43. This contact allows... When the handle b3 is pressed and pulled to move the connecting rod 41, it will cause the connecting ball head 46 and the connecting rod 47 to move synchronously. The spherical shape of the connecting ball head 46 ensures that the contact and engagement between the connecting seat 43 and the connecting ball head 46 will not be affected when the multi-degree-of-freedom clamp mechanism 4 rotates as a whole. The connecting rod 47 is slidably connected to the inner side wall of the curved arm tube 412. The inner side wall of the rotating seat 42 is slidably connected to the connecting rod 47. The front end of the connecting rod 47 is fixedly connected to the connecting ball head 46. The connecting rod 47 is away from the connecting... One end of the ball head 46 is fixedly connected to a metal hose 413. When the connecting rod 47 moves, it will drive the metal hose 413 and the traction head 416 to move synchronously. The end of the metal hose 413 away from the connecting rod 47 is fixedly connected to the traction head 416. The traction rope 410 is slidably connected to the inner side wall of the deformable sleeve 414, and the traction head 416 is slidably connected to the inner side wall of the bellows 415. Both sides of the end of the traction head 416 away from the metal hose 413 are hinged with hinge rods 418, forming two sets of hinges. Each end of the rod 418 away from the traction head 416 is hinged with a bionic forceps 419. The outer sidewalls of the two sets of bionic forceps 419 are rotatably connected to the head end tube 417. When the traction head 416 moves backward, it will drive the corresponding bionic forceps 419 to close or open with each other on the inner side of the head end tube 417 through the two sets of hinged rods 418. Furthermore, the corresponding surfaces of the two sets of bionic forceps 419 are provided with bionic tooth blocks, which form an interlocking bite when closed, which can stably grasp small tissue samples and prevent the samples from falling out or tearing during the biopsy process.

[0024] Furthermore, the inner walls of the upper and lower sides of the rear end of the rotating seat 42 are elastically connected to the limiting protrusions 45 by return springs 44. One end of the return spring 44 is fixedly connected to the rear end of the limiting protrusions 45, and the other end of the return spring 44 is fixedly connected to the inner wall of the rotating seat 42. The function of the return spring 44 is to automatically reset the position of the front spherical surface of the limiting protrusions 45 after it has been squeezed and moved by the inner wall of the ball groove of the clamp body 1. The limiting protrusions 45 are slidably connected to the inner side wall of the rotating seat 42. The rear end of the rotating seat 42 is provided with a cylindrical guide groove that fits the limiting protrusions 45, so that the limiting protrusions 45 can only move within the groove. The clamp body 1 has multiple sets of ball grooves on its front end surface, which can move back and forth inside the rotating seat 42. The outer wall of the limiting protrusion 45 contacts the inner wall of the ball groove of the clamp body 1. The contact between the two allows the multi-degree-of-freedom clamp mechanism 4 to rotate around the rear end of the clamp body 1 and be limited and fixed at multiple angles after rotation. This allows the position angle of the two sets of bionic clamps 419 to be adjusted, making it convenient and flexible to reach the corner of the uterine cavity. The rear end of the limiting protrusion 45 is cylindrical and the front end is spherical, so that the multi-degree-of-freedom clamp mechanism 4 will not rotate when not affected by external forces.

[0025] Furthermore, a lever 48 is rotatably connected through the rear side wall of the rotating seat 42. A take-up reel 49 is fixedly connected to the rotation center axis of the lever 48. A traction rope 410 is wound around the surface of the take-up reel 49. When the lever 48 rotates, it will drive the take-up reel 49 to rotate synchronously, so that the traction rope 410 is wound around its surface. Two sets of guide wheels 411 are in contact with the surface of the traction rope 410. The function of the guide wheels 411 is to guide the traction rope 410 to form a trajectory. The two sets of guide wheels 411 are rotatably connected to the inner side wall of the rotating seat 42. The traction rope 410 is rotatably connected through and slidably connected to the inner side wall of the rotating seat 42. The traction rope 410 is rotatably connected through and slidably connected to the inner wall of the curved arm tube 412. The take-up reel 49 is rotatably connected to the inner side wall of the rotating seat 42.

[0026] Specifically, the end of the traction rope 410 furthest from the winding reel 49 is fixedly connected to the rear end of the head tube 417 furthest from the center point. When the traction rope 410 is wound up, its length shortens, causing one side of the head tube 417 to bend, thus allowing for flexible and precise adjustments to the corner of the uterine cavity. A corrugated tube 415 is fixedly connected between the curved arm tube 412 and the head tube 417 near the center point. The corrugated tube 415 is existing technology and has a deformable effect. The curved arm tube 412 is fixedly connected to the head tube 417 furthest from the center point. The deformable sleeve 414 is connected. The deformable sleeve 414 is existing technology and has its own deformation recovery effect. When the winding reel 49 is not driven by the rotation of the toggle block 48, the deformation recovery effect of the deformable sleeve 414 will drive the bellows 415 to return to its initial position synchronously. Furthermore, the bending arm tube 412 and the connecting rod 47 are both made of soft alloy and can be bent. The metal hose 413 passes through and is slidably connected to the inner side wall of the bellows 415. The bellows 415 is slidably connected to the inner side wall of the deformable sleeve 414.

[0027] Working principle: During operation, by pressing the grip handle a2 and grip handle b3, the top of grip handle b3 slides along the inner wall of the bottom end of the clamp body 1 and pulls the connecting rod 41 to move backward inside the clamp body 1; the connecting rod 41 drives the connecting seat 43 at the front end to move synchronously. Because the ball groove of the connecting seat 43 contacts the connecting ball head 46, the connecting ball head 46 moves with the connecting seat 43 and drives the connecting rod 47 to slide inside the curved arm tube 412, thereby pulling the metal hose 413 and the traction head 416 to move inside the bellows 415; the traction head 416 drives the two sets of bionic forceps 419 to complete the closing or opening action inside the head end tube 417 through the hinge rods 418 hinged on both sides. The bionic teeth on the corresponding surfaces form an interlocking bite when closed, which can stably grasp small tissue samples and avoid sample drop or tearing.

[0028] Multi-angle adjustment and positioning principle: The rotating seat 42 is rotatably connected to the front end of the forceps body 1. The limiting protrusions 45 on the upper and lower sides of its rear end contact the multiple sets of ball grooves at the front end of the forceps body 1 under the action of the return spring 44, so that the multi-degree-of-freedom forceps mechanism 4 can rotate 360 ​​degrees around the forceps body 1. After rotation, the limiting protrusions 45 and the ball grooves are engaged to achieve multi-angle limiting and fixing. At the same time, the rotating block 48 can drive the winding reel 49 to rotate, so that the traction rope 410 is wound after being guided by the guide wheel 411. The traction rope 410 pulls one side of the head tube 417. Combined with the soft alloy characteristics of the bending arm tube 412 and the connecting rod 47 and the deformability of the bellows 415, the bending adjustment of the head tube 417 is realized. When the block 48 is released, the deformation recovery effect of the deformation sleeve 414 drives the bellows 415 to return to its original position, thereby flexibly adjusting the position of the bionic forceps 419 to adapt to the biopsy needs of different corners in the uterine cavity.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-degree-of-freedom serpentine hysteroscopic biopsy forceps, characterized in that, Includes a clamp body (1), with a gripping handle a (2) hinged to the rear end of the clamp body (1), and a gripping handle b (3) rotatably connected to the surface of the gripping handle a (2). The front end of the clamp body (1) is provided with a multi-degree-of-freedom clamping mechanism (4), and the bionic clamping claws at the front end can rotate at multiple angles. The multi-degree-of-freedom clamp mechanism (4) includes a connecting rod (41), the surface of which has a through cavity, the side wall of the top end of the gripping handle b (3) is in contact with the inner wall of the cavity of the connecting rod (41), the surface of the top end of the gripping handle b (3) is slidably connected to the inner wall of the bottom end of the clamp body (1), and the connecting rod (41) is slidably connected to the inner side wall of the clamp body (1).

2. The multi-degree-of-freedom serpentine hysteroscopic biopsy forceps according to claim 1, characterized in that, The clamp body (1) is fixedly and rotatably connected to a rotating seat (42) at one end away from the grip handle a (2). A curved arm tube (412) is fixedly connected to the other end of the rotating seat (42) away from the clamp body (1). A connecting seat (43) is fixedly connected to the front end surface of the connecting rod (41). A connecting rod (47) is slidably connected to the inner side wall of the rotating seat (42). A connecting ball head (46) is fixedly connected to the front end of the connecting rod (47). The connecting rod (47) is located away from the connecting ball head (46). One end of the device is fixedly connected to a metal hose (413), and the end of the metal hose (413) away from the connecting rod (47) is fixedly connected to a traction head (416). The traction head (416) is hinged to both sides of the end away from the metal hose (413), and the ends of the two sets of hinge rods (418) away from the traction head (416) are hinged to bionic clamps (419). The outer sidewalls of the two sets of bionic clamps (419) are rotatably connected to a head end tube (417).

3. The multi-degree-of-freedom serpentine hysteroscopic biopsy forceps according to claim 2, characterized in that, The inner walls of the upper and lower sides of the rear end of the rotating seat (42) are elastically connected to the limit protrusions (45) by the reset springs (44).

4. The multi-degree-of-freedom serpentine hysteroscopic biopsy forceps according to claim 2, characterized in that, The rear side wall of the rotating seat (42) is rotatably connected to a lever (48). The rotation center axis of the lever (48) is fixedly connected to a take-up reel (49). A traction rope (410) is wound around the surface of the take-up reel (49). Two sets of guide wheels (411) are in contact with the surface of the traction rope (410). One end of the traction rope (410) away from the take-up reel (49) is fixedly connected to the rear end of the head tube (417) away from the center point. A corrugated pipe (415) is fixedly connected between the curved arm tube (412) and the head tube (417) near the center point. A deformable sleeve (414) is fixedly connected between the curved arm tube (412) and the head tube (417) away from the center point.

5. The multi-degree-of-freedom serpentine hysteroscopic biopsy forceps according to claim 2, characterized in that, The inner side of the connecting seat (43) is provided with a ball groove, the connecting ball head (46) is in contact with the inner side wall of the ball groove of the connecting seat (43), and the connecting rod (47) is slidably connected to the inner side wall of the curved arm tube (412).

6. The multi-degree-of-freedom serpentine hysteroscopic biopsy forceps according to claim 2, characterized in that, The metal flexible hose (413) passes through and is slidably connected to the inner sidewall of the corrugated pipe (415), which is slidably connected to the inner sidewall of the deformable sleeve (414).

7. The multi-degree-of-freedom serpentine hysteroscopic biopsy forceps according to claim 4, characterized in that, The traction rope (410) is slidably connected to the inner sidewall of the deformable sleeve (414), and the traction head (416) is slidably connected to the inner sidewall of the bellows (415).

8. The multi-degree-of-freedom serpentine hysteroscopic biopsy forceps according to claim 4, characterized in that, The two sets of guide wheels (411) are rotatably connected to the inner side wall of the rotating seat (42), the traction rope (410) passes through and is slidably connected to the inner side wall of the rotating seat (42), the traction rope (410) passes through and is slidably connected to the inner wall of the curved arm tube (412), and the winding reel (49) is rotatably connected to the inner side wall of the rotating seat (42).

9. The multi-degree-of-freedom serpentine hysteroscopic biopsy forceps according to claim 3, characterized in that, One end of the reset spring (44) is fixedly connected to the rear end of the limiting protrusion (45), and the other end of the reset spring (44) is fixedly connected to the inner wall of the rotating seat (42).

10. The multi-degree-of-freedom serpentine hysteroscopic biopsy forceps according to claim 3, characterized in that, The limiting protrusion (45) is slidably connected to the inner side wall of the rotating seat (42). The front surface of the clamp body (1) has multiple sets of ball grooves. The outer wall of the limiting protrusion (45) is in contact with the inner wall of the ball groove of the clamp body (1).

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