Visual grabbing clamp operated by one hand

Abstract

The utility model discloses a pair of visible grasping forceps operated by one hand, which comprises a handle, the handle is connected with the tail end of a gun barrel, a cystoscope cavity channel and a grasping forceps cavity channel are arranged in the gun barrel, a pull wire cavity channel is arranged in the grasping forceps cavity channel, the head end of the pull wire cavity channel is connected with a fixed part of the grasping forceps, and a pull wire is arranged in the pull wire cavity channel. The head end of the pull wire is connected with a driving part of the grabbing clamp, a cystoscope probe is arranged at the front end of the cystoscope cavity channel, the side part of the tail part of the gun barrel is communicated with the head end of the extension tube, the tail ends of the grabbing clamp cavity channel, the pull wire cavity channel and the pull wire all extend into the extension tube, and a clamping ring and a rotary pull ring are arranged at the tail end of the extension tube. The surgical operation difficulty is reduced, specifically, the cystoscope probe provides clear images, the grabbing forceps can achieve axial feeding, rotating and grabbing functions through one-hand operation under the condition of real-time images, and the operation difficulty of the ureteral stent taking-out surgery is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical instruments, and particularly relates to a visually operated grasping forceps for single-handed operation. Background Art

[0002] In urology, surgery is usually used for treatment. After the surgery, a ureteral stent needs to be placed to ensure smooth urine drainage and promote wound recovery, and finally it needs to be removed. At present, the usual surgical method is that the doctor first holds the urogenital organ with one hand and slowly inserts the cystoscope into the bladder through the urethra with the other hand; then holds the cystoscope with one hand and manipulates the grasping forceps with the other hand. If it is necessary to hold the urogenital organ during the process, the medical assistant needs to assist. The entire surgical process is complex in collaborative operation, which increases the difficulty of surgical operation and the training cost of relevant professionals. Content of the Utility Model

[0003] The purpose of the utility model is to provide a visually operated grasping forceps for single-handed operation aiming at the above problems existing in the prior art. It can realize the axial feeding, rotation and grasping operation of the grasping forceps with one hand, and reduce the difficulty of surgical operation.

[0004] The above object of the utility model is achieved by the following technical means:

[0005] A visually operated grasping forceps for single-handed operation includes a handle, the handle is connected to the tail end of a barrel. A cystoscope channel and a grasping forceps channel are arranged in the barrel. A traction wire channel is arranged in the grasping forceps channel. The head end of the traction wire channel is connected to the fixed part of the grasping forceps. A traction wire is arranged in the traction wire channel. The head end of the traction wire is connected to the driving part of the grasping forceps. A cystoscope probe is arranged at the front end of the cystoscope channel. The cystoscope probe is connected to the head end of a cystoscope cable arranged in the cystoscope channel. The tail end of the cystoscope cable extends into the handle and is connected to a display screen arranged on the handle. The side part of the tail of the barrel is communicated with the head end of an extension tube. The tail end of the extension tube extends to the side part of the handle. The tail ends of the grasping forceps channel, the traction wire channel and the traction wire all extend into the extension tube. A clamping ring and a rotating and pulling ring are arranged at the tail end of the extension tube. The clamping ring is connected to the tail end of the traction wire. The rotating and pulling ring is connected to the traction wire channel.

[0006] As described above, the rotating and pulling ring includes an operation ring, a guide post, a connecting plate and a connecting head. The operation ring is connected to one end of the guide. The other end of the guide post passes through a guide hole on the clamping ring and is connected to the connecting plate. A connecting head is arranged on the connecting plate. The connecting head is movably connected to the tail end of the extension tube. The connecting head can rotate relative to the tail end of the extension tube. A through hole is arranged on the connecting plate. The through hole is connected to the tail end of the traction wire channel. The tail end of the traction wire passes through the through hole and is connected to the clamping ring.

[0007] As described above, both the guide post and the guide hole are multiple and have the same number, and the guide post and the guide hole correspond to each other one by one.

[0008] As described above, the connector is in the shape of a ring cylinder. One end of the connector is connected to the connecting plate, and a first annular portion is provided at the port at the other end of the connector. The tail end of the extension tube is located in the connector, and a second annular portion is provided at the tail end of the extension tube. The inner diameter of the first annular portion is larger than the outer diameter of the tail end of the extension tube and smaller than the outer diameter of the second annular portion. The inner diameter of the connector is larger than the outer diameter of the second annular portion. An O-ring is sleeved on the pipe section of the tail portion of the extension tube located between the first annular portion and the second annular portion.

[0009] As described above, the through hole includes a first communication hole and a second communication hole. The first communication hole and the second communication hole are in communication. The aperture of the first communication hole is smaller than the aperture of the second communication hole. The tail end of the traction wire channel passes through the second communication hole and is connected to the first communication hole.

[0010] As described above, a winding spring is sleeved and fixed at the tail end of the traction wire channel, and the tail end of the winding spring is connected to the inner wall of the second communication hole.

[0011] As described above, the head end of the grasping forceps channel extends to the head end of the barrel.

[0012] As described above, a water injection port is provided at the head end of the extension tube, and the water injection port is in communication with the interlayer between the outer wall of the traction wire channel and the inner wall of the grasping forceps channel.

[0013] The utility model has the following beneficial effects compared with the prior art:

[0014] Reducing the difficulty of surgical operation: The cystoscope probe provides clear images. The grasping forceps can achieve axial feeding, rotation and grasping functions through single-handed operation under the condition of real-time images, reducing the operation difficulty of ureteral stent removal surgery.

[0015] Wide range of adaptability: Combining the endoscope probe with the single-handed operable grasping forceps is applicable to other endoscopic surgery occasions, and the applicable range is extremely wide. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the head cross-sectional structure of the barrel;

[0019] Figure 4 It is a schematic diagram of the structure of the grasping forceps;

[0020] Figure 5 It is a schematic diagram of the connection of the rotary ring, the clamping ring and the extension tube.

[0021] In the figure: 1 - handle; 2 - barrel; 3 - cystoscope channel; 4 - grasping forceps channel; 5 - traction wire channel; 6 - traction wire; 7 - grasping forceps; 71 - fixing part; 72 - driving part; 8 - display screen; 9 - extension tube; 10 - clamping ring; 101 - guiding hole; 11 - rotating and pulling ring; 111 - operating ring; 112 - guiding column; 113 - connecting plate; 114 - connecting head; 115 - through hole; 115a - first communication hole; 115b - second communication hole; 116 - first annular part; 117 - second annular part; 12 - winding spring; 13 - water injection port; 14 - barrel head. Detailed implementation manners

[0022] For the convenience of those of ordinary skill in the art to understand and implement the present utility model, the present utility model will be further described in detail below in conjunction with embodiments. The embodiments described herein are only used to illustrate and explain the present utility model and are not intended to limit the present utility model.

[0023] Embodiment 1:

[0024] A single-handed visual grasping forceps, comprising a handle 1, the handle 1 is connected to the tail end of the barrel 2, a cystoscope channel 3 and a grasping forceps channel 4 are arranged in the barrel 2, the cystoscope channel 3 and the grasping forceps channel 4 are independent of each other in the barrel 2, a traction wire channel 5 is arranged in the grasping forceps channel 4, the head end of the traction wire channel 5 is connected to the fixing part of the grasping forceps 7, a traction wire 6 is arranged in the traction wire channel 5, the head end of the traction wire 6 is connected to the driving part of the grasping forceps 7, the grasping forceps 7 is an existing module, including a fixing part, a driving part and a clamp head, the traction wire channel 5 serves as a support for the fixing part of the grasping forceps 7, when the traction wire 6 pushes and pulls the driving part of the grasping forceps 7 in the traction wire channel 5, the clamp head of the grasping forceps 7 realizes an opening and closing movement, the grasping forceps 7 is an existing module, and its structure will not be described in detail in the present invention. A cystoscope probe is arranged at the front end of the cystoscope channel 3, the cystoscope probe is connected to the head end of the cystoscope cable arranged in the cystoscope channel 3, the tail end of the cystoscope cable extends into the handle 1 and is connected to the display screen 8 arranged on the handle 1, and the cystoscope probe is used for visually detecting the outside and transmitting the detected image to the display screen 8 for visual display. The side part of the tail of the barrel 2 is communicated with the head end of the extension tube 9, the tail end of the extension tube 9 extends to the side part of the handle 1, the tail ends of the grasping forceps channel 4, the traction wire channel 5 and the traction wire 6 all extend into the extension tube 9, a clamping ring 10 and a rotating ring 11 are arranged at the tail end of the extension tube 9, the clamping ring 10 is connected to the tail end of the traction wire 6, and the rotating ring 11 is connected to the traction wire channel 5. The traction wire 6 can be made of stainless steel wire with a certain stiffness, and can move along the traction wire channel 5 under the push and pull of the clamping ring 10, driving the movement of the driving part of the grasping forceps 7, and further realizing the opening and closing movement of the clamp head of the grasping forceps 7. The traction wire channel 5 can be made of an aluminum alloy tube with a small diameter, which has a certain stiffness and a certain flexibility at the same time. When the rotating ring 11 rotates, it can drive the traction wire channel 5 to rotate around its own central axis, and further drive the rotation of the fixing part of the grasping forceps 7, and further adjust the orientation of the clamp head of the grasping forceps 7.

[0025] In some embodiments, the rotating and pulling ring 11 includes an operating ring 111, a guiding post 112, a connecting plate 113 and a connecting head 114. Both the guiding posts 112 and the guiding holes 101 are multiple and have the same number. The guiding posts 112 and the guiding holes 101 correspond to each other one by one. The operating ring 111 is connected to one end of the guiding post 112. The other end of the guiding post 112 passes through the corresponding guiding hole 101 on the clamping ring 10 and is connected to the connecting plate 113. Under the guiding action of the guiding post 112, the clamping ring 10 can move along the guiding ring 112 to realize the pushing and pulling of the traction wire 6, thereby controlling the opening and closing of the clamping head. A connecting head 114 is arranged on the connecting plate 113. The connecting head 114 is movably connected to the tail end of the extension tube 9. The connecting head 114 can rotate relative to the tail end of the extension tube 9. The whole rotating and pulling ring 11 can rotate relative to the tail end of the extension tube 9. Under the action of the guiding post 112, the clamping ring 10 is driven to rotate together. A through hole 115 is arranged on the connecting plate 113. The through hole is connected to the tail end of the traction wire cavity 5. The tail end of the traction wire 6 passes through the through hole 115 and is connected to the clamping ring 10.

[0026] In some embodiments, the connecting head 114 is in the shape of a ring cylinder. One end of the connecting head 114 is connected to the connecting plate 113. A first annular portion 116 is arranged at the port of the other end of the connecting head 114. The tail end of the extension tube 9 is located in the connecting head 114. A second annular portion 117 is arranged at the tail end of the extension tube 9. The inner diameter of the first annular portion 116 is larger than the outer diameter of the tail end of the extension tube 9 and smaller than the outer diameter of the second annular portion 117. Under the clamping action of the first annular portion 116 and the second annular portion 117, the tail end of the extension tube 9 will not break away from the connecting head 114, but the connecting head 114 can still rotate relative to the tail end of the extension tube 9. The inner diameter of the connecting head 114 is larger than the outer diameter of the second annular portion 117. As a preferred solution, the first annular portion 116 is detachably installed at the port of the connecting head 114. For example, external threads are arranged on the outer ring of the first annular portion 116, and internal threads are arranged in the port of the connecting head 114. The first annular portion 116 and the port of the connecting head 114 are connected by threads.

[0027] The through hole 115 includes a first communication hole 115a and a second communication hole 115b. The first communication hole 115a and the second communication hole 115b are communicated. The aperture of the first communication hole 115a is smaller than the aperture of the second communication hole 115b. The second communication hole 115b faces the tail end of the extension tube 9. The tail end of the traction wire cavity 5 passes through the second communication hole 115b and is connected to the first communication hole 115a. As a preferred solution, the tail end of the traction wire cavity 5 passes through the second communication hole 115b and is hermetically communicated with the first communication hole 115a. Since water will be injected into the grasping forceps cavity 4, the hermetic communication can prevent the injected water from flowing out through the first communication hole 115a and causing leakage.

[0028] In some embodiments, a winding spring 12 is sleeved and fixed at the tail end of the traction wire channel 5, and the tail end of the winding spring 12 is connected to the inner wall of the second communication hole 115b. Since the traction wire channel 5 is often driven to rotate by the rotary ring 11, the tail end of the traction wire channel 5 is prone to large deformation relative to the head end. After winding and fixing the winding spring 12 at the tail end of the traction wire channel 5, the torsional resistance and push-pull strength of the tail end of the traction wire channel 5 can be increased.

[0029] The head end of the grasping forceps channel 4 extends to the head end of the barrel 2. The head end of the extension tube 9 is provided with a water injection port 13, and the water injection port 13 communicates with the interlayer between the outer wall of the traction wire channel 5 and the inner wall of the grasping forceps channel 4. The tube sections of the tail of the extension tube 9 located at the first annular part 116 and the second annular part 117 are sleeved with O-ring seals. Due to the sealing effect of the O-ring seal, the connection between the connection head 114 and the extension tube 9 is sealed, so the water flowing out from the tail end of the grasping forceps channel 4 will not overflow from the connection between the connection head 114 and the extension tube 9. And since the tail end of the traction wire channel 5 passes through the second communication hole 115b and is sealed and communicated with the first communication hole 115a, the injected water will not overflow from the through hole 115 either. It is ensured that the water injected from the water injection port can only flow in the grasping forceps channel 4 and then flow out from the head of the grasping forceps channel 4 to ensure a clear view during the operation of the cystoscope probe.

[0030] The rotary ring 11 and the clamping ring 10 are arranged on the front side of the handle 1 near the index finger, and the axial feed stroke of the rotary ring 11 and the clamping stroke of the clamping ring 10 do not exceed 5 mm, which is convenient for adjusting the rotary ring 11 with the index finger and adjusting the clamping ring 10 with the middle finger, and the overall function can be easily realized by single-handed operation.

[0031] Preferably, when the rotary ring 11 pulls back the traction wire channel 5 to the end of the return stroke (the first annular part 116, the O-ring seal, and the second annular part 117 are closely abutted), the grasping forceps 7 can be pulled back into the head end of the grasping forceps channel 4. When the rotary ring 11 pushes the traction wire channel 5 to the end of the forward stroke (the tail end of the extension tube 9 abuts against the connecting plate 113), the grasping forceps 7 can be pushed out of the head end of the grasping forceps channel 4.

[0032] During the operation, the grasping forceps 7 are pulled back into the head end of the grasping forceps channel 4, and the head end of the barrel 2 with a diameter of 4.6 mm is slowly advanced into the bladder through the urethra. The position of the ureteral stent is observed through the cystoscope probe in the bladder. After the ureteral stent is found, the grasping forceps 7 are controlled to extend and approach the ureteral stent by pushing the rotary ring 11. Then, the rotary ring 11 and the clamping ring 10 are clamped to make the grasping forceps 7 clamp the ureteral stent. Subsequently, the handle 1 is held and the ureteral stent is slowly pulled out of the body. If the grasping angle of the grasping forceps 7 is not ideal during the process of grasping the ureteral stent, the rotary ring 11 can be rotated to drive the grasping forceps 7 to rotate synchronously to adjust to the most suitable grasping angle.

[0033] As a preferred solution, the material of the barrel 2 is ABS plastic, the material of the towing wire cavity 5 is aluminum alloy, and the material of the towing wire is titanium alloy.

[0034] It should be noted that the embodiments described in the present invention are only illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A one-handed operable visual grasping forceps, comprising a handle (1), characterized in that, The handle (1) is connected to the tail end of the barrel (2). Inside the barrel (2), there are a cystoscope channel (3) and a grasping forceps channel (4). Inside the grasping forceps channel (4), there is a traction wire channel (5). The head end of the traction wire channel (5) is connected to the fixing part of the grasping forceps (7). Inside the traction wire channel (5), there is a traction wire (6). The head end of the traction wire (6) is connected to the driving part of the grasping forceps (7). At the front end of the cystoscope channel (3), there is a cystoscope probe, which is connected to the head end of the cystoscope cable arranged in the cystoscope channel (3). The tail end of the cystoscope cable extends into the handle (1) and is connected to the display screen (8) arranged on the handle (1). The side part of the tail of the barrel (2) is communicated with the head end of the extension tube (9). The tail end of the extension tube (9) extends to the side part of the handle (1). The tail ends of the grasping forceps channel (4), the traction wire channel (5), and the traction wire (6) all extend into the extension tube (9). At the tail end of the extension tube (9), there are a clamping ring (10) and a rotating ring (11). The clamping ring (10) is connected to the tail end of the traction wire (6), and the rotating ring (11) is connected to the traction wire channel (5).

2. The single-handed operable visual grasping forceps according to claim 1, characterized in that, The rotating ring (11) includes an operation ring (111), a guide post (112), a connecting plate (113), and a connecting head (114). The operation ring (111) is connected to one end of the guide post (112). The other end of the guide post (112) passes through the guide hole (101) on the clamping ring (10) and is connected to the connecting plate (113). The connecting plate (113) is provided with a connecting head (114). The connecting head (114) is movably connected to the tail end of the extension tube (9). The connecting head (114) can rotate relative to the tail end of the extension tube (9). The connecting plate (113) is provided with a through hole (115). The through hole is connected to the tail end of the traction wire channel (5). The tail end of the traction wire (6) passes through the through hole (115) and is connected to the clamping ring (10).

3. The single-handed visual grasping forceps according to claim 2, wherein Both the guide post (112) and the guide hole (101) are multiple and have the same number, and the guide post (112) and the guide hole (101) correspond one by one.

4. The one-handed visual grasping forceps according to claim 2, characterized in that The connecting head (114) is in a ring-tube shape. One end of the connecting head (114) is connected to the connecting plate (113). At the port of the other end of the connecting head (114), there is a first annular part (116). The tail end of the extension tube (9) is located in the connecting head (114). The tail end of the extension tube (9) is provided with a second annular part (117). The inner ring of the first annular part (116) is larger than the outer diameter of the tail end of the extension tube (9) and smaller than the outer diameter of the second annular part (117). The inner diameter of the connecting head (114) is larger than the outer diameter of the second annular part (117). An O-ring is sleeved on the pipe section of the tail of the extension tube (9) located between the first annular part (116) and the second annular part (117).

5. The one-handed visual grasping forceps according to claim 2, characterized in that, The through hole (115) includes a first communication hole (115a) and a second communication hole (115b). The first communication hole (115a) and the second communication hole (115b) are in communication. The aperture of the first communication hole (115a) is smaller than that of the second communication hole (115b). The tail end of the traction wire channel (5) passes through the second communication hole (115b) and is connected to the first communication hole (115a).

6. The one-handed operable visual grasping forceps according to claim 5, wherein, A winding spring (12) is sleeved and fixed at the tail end of the traction wire channel (5). The tail end of the winding spring (12) is connected to the inner wall of the second communication hole (115b).

7. The visual grasping forceps for single-handed operation according to any one of claims 1-6, characterized in that, The head end of the grasping forceps channel (4) extends to the head end of the barrel (2).

8. The single-handed visual grasping forceps according to claim 7, characterized in that, A water injection port (13) is provided at the head end of the extension tube (9). The water injection port (13) is in communication with the interlayer between the outer wall of the traction wire channel (5) and the inner wall of the grasping forceps channel (4).

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